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Thinx Teens undies absorb your flow, control odor, wick moisture, and prevent leaks — so you can feel fresh, dry, and comfy! No pads, tampons, or other period products needed. Check out our Product Info page to — you guessed it — learn more about how Thinx Teens work! And if you want to learn more about how *periods* work, we’ve got a page for that, too.
Each pair holds up to 5 regular tampons’ worth of flow, which is the equivalent of 2.5 pads (45mL). For some flows, Thinx Teens™ will last all day, no other period products needed!
Because every period is different, it varies! To find out what works best for you, we recommend trying Thinx Teens at home first, especially if you’re still getting to know your period. If the underwear starts to feel bulky, wet, or if you notice your flow spreading to the seams, these are signs that it’s time for a fresh pair!
Depending on your flow, you may need to pack an extra pair of Thinx Teens to get through the day — no big deal! Our undies are lightweight and easy to store, so an extra pair will fit perfectly in any backpack or gym bag. We suggest bringing along a resealable bag, pouch, or wet bag — so that you can put your used pair of Thinx Teens away until you get home.
Our absorbent underwear isn’t stain-proof, although the materials used in our absorbent gusset are largely stain-resistant. Thinx Inc. absorbent underwear is also lined in black to prevent stains from showing. To further prevent stains, follow the washing instructions on our How to Wash page.
Nope! Thinx for All Leaks is a sustainable alternative to pantyliners and other disposables. Every pair features built-in absorbent tech for comfortable, discreet protection. You can finally say goodbye to last-minute trips to the drug store and digging through your bag for a spare liner.
Yes! Our period underwear is machine washable and reusable! Just wash on cold and hang up to dry!
Yup! Thinx Teens sustainable period underwear can be worn alone — no other period products are required. If you feel more comfortable wearing them as back-up protection to other period products, go ahead! Wear them however you prefer, but we *always* suggest you try Thinx Teens at home first to understand how it works for your body and your period.
Thinx Teens are designed to fit close to the body to help prevent period leaks and stains. If you put a pad or pantyliner on top of your Thinx Teens, the gusset won’t be close enough to the body to absorb your period. For folks who usually wear pads and pantyliners, we recommend wearing + changing a couple pairs of Thinx Teens throughout the day, depending on how heavy your flow is (without any other products). Folks who like to wear tampons can wear Thinx Teens as a backup since tampons don’t take up space outside the body, but again, no other period products are needed in order to protect you from leaks!
Purchasing one of our Fresh Start Period Kits is a great way to have multiple pairs on hand, but some people start with just 1 pair and wash them throughout their cycle (daily). Ultimately, it’s up to you on how you want to use Thinx Teens — do what’s best for your lifestyle + flow.
Yes! Our underwear have a moisture-wicking layer that draws away wetness and neutralizes odors. Plus, they are super-absorbent and breathable so you always feel fresh and dry.
Our undies are built with various layers of fabric that wick away moisture quickly and control odor — leaving you feeling fresh and dry.
We don’t recommend using these undies as a swimsuit because we can’t guarantee the period absorbency will work in the water.
Here’s the fabric breakdown for all of our styles: body: 95% cotton, 5% elastane; gusset: 100% polyester. The underwear is made with cotton, so only natural fiber touches the most sensitive areas.
We craft our underwear carefully and consciously, from sustainable manufacturing processes to ethical working conditions. We’re proud to work with MAS, a global leader in ethical manufacturing based in Sri Lanka. MAS operates under three pillars: products changed for good, our planet changed for good, and lives changed for good. Visit our Manufacturing page to learn more about how we make our underwear and the incredible people who make them!
Our undies are machine washable, reusable, and absorbent — there’s *a lot* of science and development that goes into making them, and making sure they last. Disposable products can only be used once, but Thinx Teens can last up to 2 years — that means over time you can save serious $$$ while being eco-friendly!
Thinx Teens is period underwear designed for teen body shapes and sizes. All Thinx Teens styles are full-coverage and super absorbent to support first and early periods, which can be inconsistent. They're a simple and easy way to transition into using period products. Thinx, our period underwear for adults, offers a range of styles made with taller, curvier adult bodies in mind. Thinx absorbencies range from lightest to super for folks familiar with their flow, so they can select pairs for each stage of their unique cycle.
No! Our absorbent underwear is lightweight but super-absorbent — so it won’t bulk up while keeping your tween or teen protected. The fabric is also moisture-wicking, so they'll always feel fresh and dry.
For some flows, our 5 regular tampons' worth absorbency undies can last between 8 - 12 hours. But every period is different. We suggest you try Thinx Teens at home first to understand how it works for you. You should change into a fresh pair of undies if you feel any consistent dampness or notice your flow spreading to the seams.
Thinx Teens undies absorb your flow, control odor, wick moisture, and prevent leaks — so you can feel fresh, dry, and comfy! No pads, tampons, or other period products needed. Check out our Product Info page to — you guessed it — learn more about how Thinx Teens work! And if you want to learn more about how *periods* work, we’ve got a page for that, too.
Each pair holds up to 5 regular tampons’ worth of flow, which is the equivalent of 2.5 pads (45mL). For some flows, Thinx Teens™ will last all day, no other period products needed!
Because every period is different, it varies! To find out what works best for you, we recommend trying Thinx Teens at home first, especially if you’re still getting to know your period. If the underwear starts to feel bulky, wet, or if you notice your flow spreading to the seams, these are signs that it’s time for a fresh pair!
Depending on your flow, you may need to pack an extra pair of Thinx Teens to get through the day — no big deal! Our undies are lightweight and easy to store, so an extra pair will fit perfectly in any backpack or gym bag. We suggest bringing along a resealable bag, pouch, or wet bag — so that you can put your used pair of Thinx Teens away until you get home.
Our absorbent underwear isn’t stain-proof, although the materials used in our absorbent gusset are largely stain-resistant. Thinx Inc. absorbent underwear is also lined in black to prevent stains from showing. To further prevent stains, follow the washing instructions on our How to Wash page.
Nope! Thinx for All Leaks is a sustainable alternative to pantyliners and other disposables. Every pair features built-in absorbent tech for comfortable, discreet protection. You can finally say goodbye to last-minute trips to the drug store and digging through your bag for a spare liner.
Yes! Our period underwear is machine washable and reusable! Just wash on cold and hang up to dry!
Yup! Thinx Teens sustainable period underwear can be worn alone — no other period products are required. If you feel more comfortable wearing them as back-up protection to other period products, go ahead! Wear them however you prefer, but we *always* suggest you try Thinx Teens at home first to understand how it works for your body and your period.
Thinx Teens are designed to fit close to the body to help prevent period leaks and stains. If you put a pad or pantyliner on top of your Thinx Teens, the gusset won’t be close enough to the body to absorb your period. For folks who usually wear pads and pantyliners, we recommend wearing + changing a couple pairs of Thinx Teens throughout the day, depending on how heavy your flow is (without any other products). Folks who like to wear tampons can wear Thinx Teens as a backup since tampons don’t take up space outside the body, but again, no other period products are needed in order to protect you from leaks!
Purchasing one of our Fresh Start Period Kits is a great way to have multiple pairs on hand, but some people start with just 1 pair and wash them throughout their cycle (daily). Ultimately, it’s up to you on how you want to use Thinx Teens — do what’s best for your lifestyle + flow.
Yes! Our underwear have a moisture-wicking layer that draws away wetness and neutralizes odors. Plus, they are super-absorbent and breathable so you always feel fresh and dry.
Our undies are built with various layers of fabric that wick away moisture quickly and control odor — leaving you feeling fresh and dry.
We don’t recommend using these undies as a swimsuit because we can’t guarantee the period absorbency will work in the water.
Here’s the fabric breakdown for all of our styles: body: 95% cotton, 5% elastane; gusset: 100% polyester. The underwear is made with cotton, so only natural fiber touches the most sensitive areas.
We craft our underwear carefully and consciously, from sustainable manufacturing processes to ethical working conditions. We’re proud to work with MAS, a global leader in ethical manufacturing based in Sri Lanka. MAS operates under three pillars: products changed for good, our planet changed for good, and lives changed for good. Visit our Manufacturing page to learn more about how we make our underwear and the incredible people who make them!
Our undies are machine washable, reusable, and absorbent — there’s *a lot* of science and development that goes into making them, and making sure they last. Disposable products can only be used once, but Thinx Teens can last up to 2 years — that means over time you can save serious $$$ while being eco-friendly!
Thinx Teens is period underwear designed for teen body shapes and sizes. All Thinx Teens styles are full-coverage and super absorbent to support first and early periods, which can be inconsistent. They're a simple and easy way to transition into using period products. Thinx, our period underwear for adults, offers a range of styles made with taller, curvier adult bodies in mind. Thinx absorbencies range from lightest to super for folks familiar with their flow, so they can select pairs for each stage of their unique cycle.
No! Our absorbent underwear is lightweight but super-absorbent — so it won’t bulk up while keeping your tween or teen protected. The fabric is also moisture-wicking, so they'll always feel fresh and dry.
For some flows, our 5 regular tampons' worth absorbency undies can last between 8 - 12 hours. But every period is different. We suggest you try Thinx Teens at home first to understand how it works for you. You should change into a fresh pair of undies if you feel any consistent dampness or notice your flow spreading to the seams.
Thinx Teens should fit slightly more snug than your regular underwear to provide maximum protection from leaks. We recommend following the hip measurement, as most of our styles sit on the hips. Be sure to measure the hips at your widest point (derriere included!) Take a peek at our handy sizing chart to get the right measurements for the perfect fit.
Great news! Our Thinx line is underwear that absorbs your period, designed specifically for adults — made made with taller, curvier bodies in mind (people who have already finished puberty). Thinx offers a range of styles for adults including activewear and apparel in sizes XS-4X, with a variety of absorbency levels from 1 to 5 regular tampons’ worth to support more predictable flows.
Thinx Teens are designed specifically for teen body shapes and sizes in full-coverage styles that provide maximum absorbency, to support first and early periods, which can be uneven and inconsistent.
Thinx Teens should fit slightly more snug than your regular underwear to provide maximum protection from leaks. We recommend following the hip measurement, as most of our styles sit on the hips. Be sure to measure the hips at your widest point (derriere included!) Take a peek at our handy sizing chart to get the right measurements for the perfect fit.
Great news! Our Thinx line is underwear that absorbs your period, designed specifically for adults — made made with taller, curvier bodies in mind (people who have already finished puberty). Thinx offers a range of styles for adults including activewear and apparel in sizes XS-4X, with a variety of absorbency levels from 1 to 5 regular tampons’ worth to support more predictable flows.
Thinx Teens are designed specifically for teen body shapes and sizes in full-coverage styles that provide maximum absorbency, to support first and early periods, which can be uneven and inconsistent.
Your period is one phase of your menstrual cycle, which in total typically lasts 21 to 45 days. The ~flow~ of blood and tissue you experience (your period!) happens about halfway through that cycle. Roughly once a month, beginning at puberty, your body prepares for an egg to be fertilized (possible pregnancy). During this time, the lining of your uterus thickens around the egg. When you don’t become pregnant, your body sheds the built up lining of the uterus that it no longer needed and releases the unfertilized egg. This is referred to as menstruation, or what we call a “period" — menstrual blood and tissue flow from your uterus through the small opening in your cervix and pass out of your body through your vagina.
*Every body* is different, and it’s no big deal to get your period before or after your friends. Some people get their first period as early as 8 or 9 years old, others get them as late as 16. First periods often happen around the same time in life for people who are related to one another, so if you can, ask someone related to you with a period when they got theirs to get some idea of when you’ll get yours.
Ovulation refers to the phase of your cycle when an egg is released from the ovaries. Pregnancy occurs when an egg is fertilized by sperm. When an egg isn't fertilized by sperm, your body sends the signal that you're not pregnant and begins getting ready to shed the uterine lining. A couple weeks after ovulation, you'll get your period, which is how your body naturally flushes out blood, mucus, and tissue out of your cervix. This cycle repeats itself every month.
*Every body* is different! You may feel a little wetness (more than usual vaginal discharge) or you may not feel your period flow at all, instead you’ll just notice some color on your undies.
The amount of time you’ll bleed every month can vary from 3 to 7 days, but it’s normal for your period to vary a little from cycle to cycle. If you notice blood for longer than 7 days, it’s a good idea to check with your doctor to make sure everything is okay.
Every period is unique. Many things can affect the frequency in which you get your period such as stress, hormones, pregnancy, or even medications such as birth control, but the average period occurs monthly or every 28 days. Some cycles can even be longer or shorter than this –– which is normal too! You can always check with your doctor if you think something is amiss with your cycle.
On average, you lose 2 to 7 teaspoons of menstrual fluid while on your period. That might seem like a lot, especially when you're changing your period products, but that's because menstrual fluid is made up of a bit more than just blood. Menstrual fluid is actually a combination of blood and tissue from your uterine lining, which is also why you might notice clots or other textures that differ from a regular cut. If you’re ever concerned that you’re losing too much menstrual fluid, check-in with your doctor to make sure everything is okay, or ask an adult to help you set up an appointment.
Periods come in all different colors and textures — some are more red and liquidy, others may be brown and clumpy. Brown blood is just blood that’s a bit older. Some people notice brown blood before they see red (on or before day 1), others have brown blood at the end of their period (day 5, or whenever your period ends). If you’ve just started your period, you may only see brown stuff, and that’s totally normal.
Periods are different for *every body* and yours can even be different from cycle to cycle. You may start with a light flow, have heavy days in the middle, and finish off with a light flow; or have heavy flows at the beginning and then lighter days only at the end; or something else! You’ll get to know *your* flow over time and understand what heavy, moderate, and light days mean for you.
Absolutely! You can do *anything* on your period—swim, dance, wear white pants, go camping, whatever — you may just want to use different period products depending on the activity. However, we don't recommend using our products underwater.
Your period is just one phase of your menstrual cycle, which in total typically lasts 21 - 45 days. The ~flow~ of blood and tissue you experience (your period!) happens about halfway through that cycle.
PMS, or premenstrual syndrome, is often defined by the physical and emotional symptoms you may feel before you get your period. The fluctuation of estrogen and progesterone hormones is responsible for symptoms such as cramps, bloating, sore boobs, fatigue, moodiness, breakouts, diarrhea, nausea, headaches, irritability, mood swings, food cravings, anxiety, and more (fun, we know!). PMS symptoms often show up a few days before your flow begins and can function as helpful signs to let you know when to keep your period undies on hand!
Periods are 100% normal and nothing to be ashamed about! It may feel super-awkward, but it doesn’t have to be. For some it’s easy to blurt this kinda stuff out, others find it is easier to write a note or send a text. Your friends or any adults you trust can be a helpful support system when you need assurance or advice.
Who you decide to share your period with is your choice, but in many cases sharing with someone you trust is helpful and can lead to some really awesome tips on what products to use and how to feel better if you have PMS symptoms. Periods are nothing to be ashamed of or hide!
We’re so glad you asked! Not all bodies experience periods, only bodies with uteruses. These bodies produce certain hormones (naturally-occurring chemicals in our bodies) that make a menstrual cycle happen, which is a fancy way of saying that they make a period happen. Bodies without uteruses (such as bodies with penises) don’t experience periods because they don’t have a uterus.
Periods begin at puberty, between the ages of 8 and 16. and last until you enter what’s called menopause. This happens for most people between the ages of 45 and 55, and, like your period, menopause will come with some new physical and emotional changes. Fun, we know!
Your period is one phase of your menstrual cycle, which in total typically lasts 21 to 45 days. The ~flow~ of blood and tissue you experience (your period!) happens about halfway through that cycle. Roughly once a month, beginning at puberty, your body prepares for an egg to be fertilized (possible pregnancy). During this time, the lining of your uterus thickens around the egg. When you don’t become pregnant, your body sheds the built up lining of the uterus that it no longer needed and releases the unfertilized egg. This is referred to as menstruation, or what we call a “period" — menstrual blood and tissue flow from your uterus through the small opening in your cervix and pass out of your body through your vagina.
*Every body* is different, and it’s no big deal to get your period before or after your friends. Some people get their first period as early as 8 or 9 years old, others get them as late as 16. First periods often happen around the same time in life for people who are related to one another, so if you can, ask someone related to you with a period when they got theirs to get some idea of when you’ll get yours.
Ovulation refers to the phase of your cycle when an egg is released from the ovaries. Pregnancy occurs when an egg is fertilized by sperm. When an egg isn't fertilized by sperm, your body sends the signal that you're not pregnant and begins getting ready to shed the uterine lining. A couple weeks after ovulation, you'll get your period, which is how your body naturally flushes out blood, mucus, and tissue out of your cervix. This cycle repeats itself every month.
*Every body* is different! You may feel a little wetness (more than usual vaginal discharge) or you may not feel your period flow at all, instead you’ll just notice some color on your undies.
The amount of time you’ll bleed every month can vary from 3 to 7 days, but it’s normal for your period to vary a little from cycle to cycle. If you notice blood for longer than 7 days, it’s a good idea to check with your doctor to make sure everything is okay.
Every period is unique. Many things can affect the frequency in which you get your period such as stress, hormones, pregnancy, or even medications such as birth control, but the average period occurs monthly or every 28 days. Some cycles can even be longer or shorter than this –– which is normal too! You can always check with your doctor if you think something is amiss with your cycle.
On average, you lose 2 to 7 teaspoons of menstrual fluid while on your period. That might seem like a lot, especially when you're changing your period products, but that's because menstrual fluid is made up of a bit more than just blood. Menstrual fluid is actually a combination of blood and tissue from your uterine lining, which is also why you might notice clots or other textures that differ from a regular cut. If you’re ever concerned that you’re losing too much menstrual fluid, check-in with your doctor to make sure everything is okay, or ask an adult to help you set up an appointment.
Periods come in all different colors and textures — some are more red and liquidy, others may be brown and clumpy. Brown blood is just blood that’s a bit older. Some people notice brown blood before they see red (on or before day 1), others have brown blood at the end of their period (day 5, or whenever your period ends). If you’ve just started your period, you may only see brown stuff, and that’s totally normal.
Periods are different for *every body* and yours can even be different from cycle to cycle. You may start with a light flow, have heavy days in the middle, and finish off with a light flow; or have heavy flows at the beginning and then lighter days only at the end; or something else! You’ll get to know *your* flow over time and understand what heavy, moderate, and light days mean for you.
Absolutely! You can do *anything* on your period—swim, dance, wear white pants, go camping, whatever — you may just want to use different period products depending on the activity. However, we don't recommend using our products underwater.
Your period is just one phase of your menstrual cycle, which in total typically lasts 21 - 45 days. The ~flow~ of blood and tissue you experience (your period!) happens about halfway through that cycle.
PMS, or premenstrual syndrome, is often defined by the physical and emotional symptoms you may feel before you get your period. The fluctuation of estrogen and progesterone hormones is responsible for symptoms such as cramps, bloating, sore boobs, fatigue, moodiness, breakouts, diarrhea, nausea, headaches, irritability, mood swings, food cravings, anxiety, and more (fun, we know!). PMS symptoms often show up a few days before your flow begins and can function as helpful signs to let you know when to keep your period undies on hand!
Periods are 100% normal and nothing to be ashamed about! It may feel super-awkward, but it doesn’t have to be. For some it’s easy to blurt this kinda stuff out, others find it is easier to write a note or send a text. Your friends or any adults you trust can be a helpful support system when you need assurance or advice.
Who you decide to share your period with is your choice, but in many cases sharing with someone you trust is helpful and can lead to some really awesome tips on what products to use and how to feel better if you have PMS symptoms. Periods are nothing to be ashamed of or hide!
We’re so glad you asked! Not all bodies experience periods, only bodies with uteruses. These bodies produce certain hormones (naturally-occurring chemicals in our bodies) that make a menstrual cycle happen, which is a fancy way of saying that they make a period happen. Bodies without uteruses (such as bodies with penises) don’t experience periods because they don’t have a uterus.
Periods begin at puberty, between the ages of 8 and 16. and last until you enter what’s called menopause. This happens for most people between the ages of 45 and 55, and, like your period, menopause will come with some new physical and emotional changes. Fun, we know!
They’re super easy to care for. Toss them in a normal load of laundry on a delicate cycle before first wear and after each use — the other clothes will be fine! (No bleach or fabric softener.) Be sure to hang dry after washing, since the heat from the dryer and irons hurts the undies’ elasticity, which helps keep leaks in. (And if you accidentally dry them once or twice, it’s not the end of the world.) Check out the full care instructions here.
Thinx Inc. absorbent underwear will last at maximum tech performance for the industry standard of about 40 washes or approximately 2 years (or longer!) when cared for properly. Check out our How to Wash page for more information.
You can recycle your period-absorbing underwear by cutting out the absorbent gusset and disposing of it. Then you can donate the remaining clean fabric in your local textile recycling bin.
Thinx Teens should not retain a scent — but if you think they need a li'l extra love, try a vinegar soak. Before you wash your undies, submerge them in a clean basin or sink with one cup of white vinegar and 1-2 cups of water. Soak for about 15 to 30 minutes, then toss 'em in the washing machine as usual.Note: If your period begins to smell different (especially fishy), that might mean something is amiss down there, and it might be a good idea to check in with your doctor.
They’re super easy to care for. Toss them in a normal load of laundry on a delicate cycle before first wear and after each use — the other clothes will be fine! (No bleach or fabric softener.) Be sure to hang dry after washing, since the heat from the dryer and irons hurts the undies’ elasticity, which helps keep leaks in. (And if you accidentally dry them once or twice, it’s not the end of the world.) Check out the full care instructions here.
Thinx Inc. absorbent underwear will last at maximum tech performance for the industry standard of about 40 washes or approximately 2 years (or longer!) when cared for properly. Check out our How to Wash page for more information.
You can recycle your period-absorbing underwear by cutting out the absorbent gusset and disposing of it. Then you can donate the remaining clean fabric in your local textile recycling bin.
Thinx Teens should not retain a scent — but if you think they need a li'l extra love, try a vinegar soak. Before you wash your undies, submerge them in a clean basin or sink with one cup of white vinegar and 1-2 cups of water. Soak for about 15 to 30 minutes, then toss 'em in the washing machine as usual.Note: If your period begins to smell different (especially fishy), that might mean something is amiss down there, and it might be a good idea to check in with your doctor.
Orders are processed Mon-Fri, before 5 pm and are typically on their way to you within 1-2 business days. Estimated shipping time frames vary by country. Please review our Shipping Policy for more information.
You can track your order here. Please note that it typically takes 1-2 business days for orders to be processed, packed, and readied for shipment. As soon as our team has completed processing, you'll receive an email confirmation with tracking details so you can follow your order step by step. If you placed an order under an account, log in to see your tracking information. Once logged into your account, view the order history tab, and you will see all your previous and current orders and their tracking info.
Our orders ship from our warehouse in Northampton, PA.
We offer a 45-day trial on all orders, so if you’re unhappy with your purchase, we’ll find a solution for you. Returns may be refunded to the original form of payment for values up to $100 or digital store credit. Begin a return or exchange here.
Getting familiar with period products before you have to use them regularly is a great idea! Wearing Thinx Teens prior to getting your period can also help minimize anxiety around when your period starts.
Order fees include applicable local taxes, duties, and brokerage fees when shipping to the EU, UK, or Canada, though you will be charged VAT at checkout if shipping to the EU or UK. Our prices do not include local taxes, duties, brokerage fees, and VATs for all other countries—you can expect to be charged by the carrier upon arrival. Please make sure you consider all costs before placing an order.
Yes! We offer international shipping, so people with periods all around the world can period better. Please check out the list of countries we ship to on our Shipping Information page. Rates and locations are subject to change depending on our carriers (UPSMI, UPS, and FedEx).
No, Fresh Start Period Kits are only eligible for return or exchange as a unit.
Our team begins processing orders quickly (so you can get your undies fast!). So, we are unfortunately unable to make order edits or cancellations. If your order has already shipped, visit our Returns & Exchanges Center within 45 days if you need to swap anything out.
While we do our best to ensure that our e-commerce experience is consistent, enjoyable, and functional across all modern browsers and devices, occasionally something small may not function properly on older browsers when an update to our code is pushed. If you are having trouble logging in, creating an account, or placing an order, we highly recommend you first update your browser to the newest version. Chrome | Firefox | Safari | Internet Explorer Or, simply trying another browser usually works (we prefer Chrome). We apologize for any inconvenience. If you still need help or are experiencing issues, please don't hesitate to contact us via our Help Center!
Yes — all Thinx inc. underwear, including our menstrual products and bladder leak underwear, can now be purchased directly at checkout and via PayPal using Flexible Spending Arrangement (FSA), Health Savings Account (HSA), and Health Reimbursement Arrangement (HRA) credit/debit cards. If you experience any issues with the card at checkout, please check your balance — if there are enough funds in your account, you may need to contact an administrator at your plan to authorize a purchase on our site. Afterpay and orders processed in currencies other than USD are not eligible. If you prefer to check out using another method, please review your plan for details about applying for reimbursement. Depending on your insurance plan, you may be required to fill out a claim form with an itemized receipt, so keep your order confirmation email handy.
We accept nearly all local currencies, and they should automatically update based on your location! On the off chance that we do not offer your local currency, you'll have the option of checking out in USD, CAD, EUR, AUD, or British Pounds. Receipts and confirmation emails will show the purchase price in USD.
We accept all major credit cards, Flexible Spending Arrangement (FSA), Health Savings Account (HSA), and Health Reimbursement Arrangement (HRA) credit/debit cards, PayPal, Google Pay, AfterPay, and Thinx Inc. gift cards.
Some retailers offer Thinx Teens in stores and you can always buy Thinx Teens directly from our website!
We recently rebranded from Thinx (BTWN) to Thinx Teens and some items may still have the previous labels and tags. Don't worry — the product you received is exactly what you ordered on our website!
Orders are processed Mon-Fri, before 5 pm and are typically on their way to you within 1-2 business days. Estimated shipping time frames vary by country. Please review our Shipping Policy for more information.
You can track your order here. Please note that it typically takes 1-2 business days for orders to be processed, packed, and readied for shipment. As soon as our team has completed processing, you'll receive an email confirmation with tracking details so you can follow your order step by step. If you placed an order under an account, log in to see your tracking information. Once logged into your account, view the order history tab, and you will see all your previous and current orders and their tracking info.
Our orders ship from our warehouse in Northampton, PA.
We offer a 45-day trial on all orders, so if you’re unhappy with your purchase, we’ll find a solution for you. Returns may be refunded to the original form of payment for values up to $100 or digital store credit. Begin a return or exchange here.
Getting familiar with period products before you have to use them regularly is a great idea! Wearing Thinx Teens prior to getting your period can also help minimize anxiety around when your period starts.
Order fees include applicable local taxes, duties, and brokerage fees when shipping to the EU, UK, or Canada, though you will be charged VAT at checkout if shipping to the EU or UK. Our prices do not include local taxes, duties, brokerage fees, and VATs for all other countries—you can expect to be charged by the carrier upon arrival. Please make sure you consider all costs before placing an order.
Yes! We offer international shipping, so people with periods all around the world can period better. Please check out the list of countries we ship to on our Shipping Information page. Rates and locations are subject to change depending on our carriers (UPSMI, UPS, and FedEx).
No, Fresh Start Period Kits are only eligible for return or exchange as a unit.
Our team begins processing orders quickly (so you can get your undies fast!). So, we are unfortunately unable to make order edits or cancellations. If your order has already shipped, visit our Returns & Exchanges Center within 45 days if you need to swap anything out.
While we do our best to ensure that our e-commerce experience is consistent, enjoyable, and functional across all modern browsers and devices, occasionally something small may not function properly on older browsers when an update to our code is pushed. If you are having trouble logging in, creating an account, or placing an order, we highly recommend you first update your browser to the newest version. Chrome | Firefox | Safari | Internet Explorer Or, simply trying another browser usually works (we prefer Chrome). We apologize for any inconvenience. If you still need help or are experiencing issues, please don't hesitate to contact us via our Help Center!
Yes — all Thinx inc. underwear, including our menstrual products and bladder leak underwear, can now be purchased directly at checkout and via PayPal using Flexible Spending Arrangement (FSA), Health Savings Account (HSA), and Health Reimbursement Arrangement (HRA) credit/debit cards. If you experience any issues with the card at checkout, please check your balance — if there are enough funds in your account, you may need to contact an administrator at your plan to authorize a purchase on our site. Afterpay and orders processed in currencies other than USD are not eligible. If you prefer to check out using another method, please review your plan for details about applying for reimbursement. Depending on your insurance plan, you may be required to fill out a claim form with an itemized receipt, so keep your order confirmation email handy.
We accept nearly all local currencies, and they should automatically update based on your location! On the off chance that we do not offer your local currency, you'll have the option of checking out in USD, CAD, EUR, AUD, or British Pounds. Receipts and confirmation emails will show the purchase price in USD.
We accept all major credit cards, Flexible Spending Arrangement (FSA), Health Savings Account (HSA), and Health Reimbursement Arrangement (HRA) credit/debit cards, PayPal, Google Pay, AfterPay, and Thinx Inc. gift cards.
Some retailers offer Thinx Teens in stores and you can always buy Thinx Teens directly from our website!
We recently rebranded from Thinx (BTWN) to Thinx Teens and some items may still have the previous labels and tags. Don't worry — the product you received is exactly what you ordered on our website!
Our referral program is one way for you to spread the Thinx Inc. love! If you refer a friend, they get $10 to spend on any Thinx Inc. product (Thinx for All Leaks, Thinx, or Thinx Teens™). If they make a purchase, you also get $10 in credits. You can earn up to $500 in Thinx inc. credit by referring up to 50 friends. To get started, sign up or log in to your account. Share your unique referral link directly or through email, SMS, WhatsApp, or Facebook!
You can view your earned, pending, and redeemed credits by visiting the Referral Dashboard tab on your account page. If you are the referrer, your credits will be unlocked after one week — unless the person you referred to has canceled their order.
Yes — you can earn up to $500 in Thinx inc. credit by referring up to 50 friends. After that, your friends who are new customers will keep receiving $10 promo codes but you will not accrue any more credits on your account.
For every new customer you refer, you will earn $10 in credit that can be used on any product of any of our brands at thinx.com. This means if you refer 3 new customers, you can spend that $30 on one pair of underwear, or split it across however many orders you’d like until it’s all spent.
With each referral, you earn ten credits, which is the equivalent of $10! One credit = $1.
Yes! You can use credits toward any Thinx Inc. product (Thinx for All Leaks, Thinx, or Thinx Teens™), including merch!
No, credits are calculated in USD and not converted to other currencies due to limitations with our partner, FriendBuy. If you select your local currency from the currency dropdown, the prices onsite will be reflected in that currency, but your credits will be USD.
You can only refer new customers.
If you’re referring a friend, your $10 in credits are unlocked in one week (after they make a purchase) as long as the order isn't canceled. If you're a new customer referred by a friend, you can use your referral code immediately to get $10 off your first order of $35 or more.
Unfortunately, if your referral cancels their order, you won’t receive the $10 credit.
Yep! At checkout, you can decide how many credits you want to apply to your order. You can apply them all at once or just use some of them and save the rest for later.
Yes, they can be used on any product at thinx.com.
No, credits don’t expire!
If you are the referrer, you can stack your referral credits with up to one discount code and use an unlimited amount of gift cards. If you are the referee, your code is not stackable with other promo codes.
No, you can refer as many people as you want, so refer away!
Our third-party partner, FriendBuy, which enables our referral program, is accepted in most countries, except for Ivory Coast, Togo, Ghana, Nigeria, China, Hong Kong, Philippines, and Russia — where FriendBuy is blocked. If you reside in one of these countries, you are unfortunately ineligible to refer or be referred by others. We're sorry about the inconvenience!
Our referral program is one way for you to spread the Thinx Inc. love! If you refer a friend, they get $10 to spend on any Thinx Inc. product (Thinx for All Leaks, Thinx, or Thinx Teens™). If they make a purchase, you also get $10 in credits. You can earn up to $500 in Thinx inc. credit by referring up to 50 friends. To get started, sign up or log in to your account. Share your unique referral link directly or through email, SMS, WhatsApp, or Facebook!
You can view your earned, pending, and redeemed credits by visiting the Referral Dashboard tab on your account page. If you are the referrer, your credits will be unlocked after one week — unless the person you referred to has canceled their order.
Yes — you can earn up to $500 in Thinx inc. credit by referring up to 50 friends. After that, your friends who are new customers will keep receiving $10 promo codes but you will not accrue any more credits on your account.
For every new customer you refer, you will earn $10 in credit that can be used on any product of any of our brands at thinx.com. This means if you refer 3 new customers, you can spend that $30 on one pair of underwear, or split it across however many orders you’d like until it’s all spent.
With each referral, you earn ten credits, which is the equivalent of $10! One credit = $1.
Yes! You can use credits toward any Thinx Inc. product (Thinx for All Leaks, Thinx, or Thinx Teens™), including merch!
No, credits are calculated in USD and not converted to other currencies due to limitations with our partner, FriendBuy. If you select your local currency from the currency dropdown, the prices onsite will be reflected in that currency, but your credits will be USD.
You can only refer new customers.
If you’re referring a friend, your $10 in credits are unlocked in one week (after they make a purchase) as long as the order isn't canceled. If you're a new customer referred by a friend, you can use your referral code immediately to get $10 off your first order of $35 or more.
Unfortunately, if your referral cancels their order, you won’t receive the $10 credit.
Yep! At checkout, you can decide how many credits you want to apply to your order. You can apply them all at once or just use some of them and save the rest for later.
Yes, they can be used on any product at thinx.com.
No, credits don’t expire!
If you are the referrer, you can stack your referral credits with up to one discount code and use an unlimited amount of gift cards. If you are the referee, your code is not stackable with other promo codes.
No, you can refer as many people as you want, so refer away!
Our third-party partner, FriendBuy, which enables our referral program, is accepted in most countries, except for Ivory Coast, Togo, Ghana, Nigeria, China, Hong Kong, Philippines, and Russia — where FriendBuy is blocked. If you reside in one of these countries, you are unfortunately ineligible to refer or be referred by others. We're sorry about the inconvenience!
With Afterpay, you can buy now and pay for your order in 4 equal payments made every two weeks — no interest added.
To be eligible for Afterpay, the value of your cart must be between $35 and $1,000. Gift cards are not eligible. Afterpay payments are due in 4 equal installments every two weeks, automatically processed to the card you register on file. The first installment is due at the time of purchase.After adding products to your cart, select Afterpay as your payment method at checkout. If this is your first time using Afterpay, you'll be redirected to their website to register and provide your payment details. If you've used Afterpay before, you'll log in to your account to complete your order.
You can use Afterpay toward any Thinx Inc. purchase of period and bladder leak underwear. Gift cards are not eligible.
Unfortunately, no — Afterpay is only available to customers in the US.
With Afterpay, you make your first payment at the time of purchase. The remaining amount due will be deducted automatically in three equal installments every two weeks from the payment method you've set up. If you want to make a payment before your next installment is due, log in to your Afterpay account — any remaining amount still owed will be updated accordingly.
Late fees may apply if you cannot make a payment. Take a look at Afterpay's complete terms and conditions for more details.
Afterpay orders are processed just like any other US standard shipping order. Once confirmed, orders typically ship out in about 1-2 business days. US standard shipping should arrive within 5-7 business days. For more information, check out our shipping details.
Afterpay will determine your spending limit and can approve or deny purchases based on payment history.
You can also use a gift card with Afterpay to pay for your purchase.
All Thinx Inc. underwear and apparel are eligible for purchase using Afterpay at checkout. Thinx Inc. gift cards are not eligible.
We offer a 45-day money-back guarantee on all purchases, including Afterpay. In this case, the original form of payment, Afterpay, is refunded. When you return item/s from an order, Afterpay will deduct the item amounts from the purchase total and adjust any remaining installments accordingly. In the case of complete order returns, Afterpay will refund any payments already made towards the total purchase and change any remaining installments to $0.
Visit Afterpay for additional information and answers to your questions.
With Afterpay, you can buy now and pay for your order in 4 equal payments made every two weeks — no interest added.
To be eligible for Afterpay, the value of your cart must be between $35 and $1,000. Gift cards are not eligible. Afterpay payments are due in 4 equal installments every two weeks, automatically processed to the card you register on file. The first installment is due at the time of purchase.After adding products to your cart, select Afterpay as your payment method at checkout. If this is your first time using Afterpay, you'll be redirected to their website to register and provide your payment details. If you've used Afterpay before, you'll log in to your account to complete your order.
You can use Afterpay toward any Thinx Inc. purchase of period and bladder leak underwear. Gift cards are not eligible.
Unfortunately, no — Afterpay is only available to customers in the US.
With Afterpay, you make your first payment at the time of purchase. The remaining amount due will be deducted automatically in three equal installments every two weeks from the payment method you've set up. If you want to make a payment before your next installment is due, log in to your Afterpay account — any remaining amount still owed will be updated accordingly.
Late fees may apply if you cannot make a payment. Take a look at Afterpay's complete terms and conditions for more details.
Afterpay orders are processed just like any other US standard shipping order. Once confirmed, orders typically ship out in about 1-2 business days. US standard shipping should arrive within 5-7 business days. For more information, check out our shipping details.
Afterpay will determine your spending limit and can approve or deny purchases based on payment history.
You can also use a gift card with Afterpay to pay for your purchase.
All Thinx Inc. underwear and apparel are eligible for purchase using Afterpay at checkout. Thinx Inc. gift cards are not eligible.
We offer a 45-day money-back guarantee on all purchases, including Afterpay. In this case, the original form of payment, Afterpay, is refunded. When you return item/s from an order, Afterpay will deduct the item amounts from the purchase total and adjust any remaining installments accordingly. In the case of complete order returns, Afterpay will refund any payments already made towards the total purchase and change any remaining installments to $0.
Visit Afterpay for additional information and answers to your questions.
We aim to create underwear that champions and supports bodies throughout different stages of life. From your first period to post-menopause and all the leaks in between. We aim to empower our customers with sustainable solutions while breaking taboos around bladder leaks and menstruation.
Since day one, giving back to our community has been at the core of our mission. We're committed to paying it forward through our giveback programs and initiatives. When you purchase Thinx products, you're supporting our mission to empower *every body* through advocating for sustainable, scalable solutions to ending period poverty — learn more about GiveRise. In addition, we're honored to team up with organizations doing incredible work as our quarterly cart donation partners. Past partners have included The Trevor Project, the Black Mamas Matter Alliance, the Chicago Period Project, and others.
We actively support menstrual equity through partnerships with non-profits and community-based organizations. You can read more about our GiveRise program here. If your organization is seeking a donation, please contact GiveRise@shethinx.com.
We aim to create underwear that champions and supports bodies throughout different stages of life. From your first period to post-menopause and all the leaks in between. We aim to empower our customers with sustainable solutions while breaking taboos around bladder leaks and menstruation.
Since day one, giving back to our community has been at the core of our mission. We're committed to paying it forward through our giveback programs and initiatives. When you purchase Thinx products, you're supporting our mission to empower *every body* through advocating for sustainable, scalable solutions to ending period poverty — learn more about GiveRise. In addition, we're honored to team up with organizations doing incredible work as our quarterly cart donation partners. Past partners have included The Trevor Project, the Black Mamas Matter Alliance, the Chicago Period Project, and others.
We actively support menstrual equity through partnerships with non-profits and community-based organizations. You can read more about our GiveRise program here. If your organization is seeking a donation, please contact GiveRise@shethinx.com.
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