Savings are applied automatically during checkout. Our custom Set discount applies to Thinx period underwear and Thinx for All Leaks bladder leak underwear (but excludes Saver Sets).
buy 3, save 10%
Buy 3-4 pairs for 10% off
Buy 5-6 pairs for 15% off
Buy 7+ pairs for 20% off
Savings are applied automatically during checkout. Our custom Set discount applies to Thinx period underwear and Thinx for All Leaks bladder leak underwear (but excludes Saver Sets).
*final sale items are not eligible for returns or exchanges.
style
With a comfy high-cut leg, this retro silhouette is sure to make you feel chic — even on heavy days.
Thinx underwear is not made or treated with PFAS.
fit
This style has semi-full coverage and fits true to size, so we recommend ordering your usual size.
Wear this one on moderate to heavy flow days when you want a bigger range of movement in the leg.
fabric
body: 84% polyamide, 16% elastane
body liner: 95% cotton, 5% elastane
gusset 1 (wicking): 95% cotton, 5% elastane
gusset 2 (absorbent): 96% cotton, 4% elastane
gusset 3 (barrier): 100% polyester, coated w/ breathable PU
Our underwear is certified according to STANDARD 100 by OEKO-TEX:registered: [20.HUS.04850 | HOHENSTEIN HTTI]
care instructions
Wash before wearing. Hand wash or machine wash cold on a delicate cycle. Do not use bleach or fabric softener. Hang dry — no ironing please!
Classic
Stylish silhouettes featuring seasonal colors and lace & mesh details in a silky-smooth fabric. Available in all 5 absorbencies for every type of flow.
I love how this fits! This might be one of my favorite styles. I like where it hits on my stomach and it’s just so comfy. It feels like a nice hug!
Natalie from Eugene, OR, moderate flow
how our period underwear works
find your style
Tell us a li'l bit about your flow, and we'll match you with the right pair!
Our underwear for periods absorbs your flow, blocks out odor, wicks moisture, and prevents leaks — so you feel fresh, dry, and comfortable! No pads, tampons, or other period products are needed. Our period-absorbing underwear is washable and reusable — providing a more sustainable alternative to single-use disposable products.
Our absorbent styles hold from 1 regular tampon worth of flow to 5 regular tampons worth, so there is a style right for each day of your cycle. We recommend trying Thinx period-absorbing underwear for the first time at home to see how each underwear style works with your ~flow~.
The gusset positioning varies by style. For example, for our heavy & super styles, the gusset provides additional coverage throughout the front and back in order to catch heavier flows as the person moves, sleeps, etc. In styles that provide protection against lighter flows, the gusset isn’t positioned as far back, but still provides excellent leak protection.
Every flow is different! You can wear Thinx underwear for periods for as long as your flow allows. The absorbency style also plays a factor, as some underwear styles are more absorbent than others.
We recommend following the hip measurement to find the most accurate size. Be sure to measure your hips at their widest point, derrière included! We recommend sizing up in underwear styles that fit below the natural waist, or if you're looking for the best fit postpartum. The underwear should fit snugly but not so tight that it becomes uncomfortable.
Our sustainable period underwear is super easy to care for. Machine wash the undies with the rest of your laundry on a cold cycle before first wear and after each use. Steer clear of fabric softener and bleach. Hang dry to keep your undies at maximum performance. Do not iron.
We typically process return orders within 1–2 business days. Once processed, US exchange orders are shipped via standard shipping and should arrive within 5–7 business days. International exchange orders are shipped via UPS Worldwide Expedited DDP.
Our underwear for periods absorbs your flow, blocks out odor, wicks moisture, and prevents leaks — so you feel fresh, dry, and comfortable! No pads, tampons, or other period products are needed. Our period-absorbing underwear is washable and reusable — providing a more sustainable alternative to single-use disposable products.
Our absorbent styles hold from 1 regular tampon worth of flow to 5 regular tampons worth, so there is a style right for each day of your cycle. We recommend trying Thinx period-absorbing underwear for the first time at home to see how each underwear style works with your ~flow~.
The gusset positioning varies by style. For example, for our heavy & super styles, the gusset provides additional coverage throughout the front and back in order to catch heavier flows as the person moves, sleeps, etc. In styles that provide protection against lighter flows, the gusset isn’t positioned as far back, but still provides excellent leak protection.
Every flow is different! You can wear Thinx underwear for periods for as long as your flow allows. The absorbency style also plays a factor, as some underwear styles are more absorbent than others.
We recommend following the hip measurement to find the most accurate size. Be sure to measure your hips at their widest point, derrière included! We recommend sizing up in underwear styles that fit below the natural waist, or if you're looking for the best fit postpartum. The underwear should fit snugly but not so tight that it becomes uncomfortable.
Our sustainable period underwear is super easy to care for. Machine wash the undies with the rest of your laundry on a cold cycle before first wear and after each use. Steer clear of fabric softener and bleach. Hang dry to keep your undies at maximum performance. Do not iron.
We typically process return orders within 1–2 business days. Once processed, US exchange orders are shipped via standard shipping and should arrive within 5–7 business days. International exchange orders are shipped via UPS Worldwide Expedited DDP.
