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).
style
Our best-selling style — designed with ultra-thin micromesh to keep you cool, fresh, & dry on light to moderate flow days.
fit
This style has extra back coverage and fits true to size, so we recommend ordering your usual size.
This fabric is quick-drying and lightweight, making it perfect for travel & exercise and comfy enough to wear everyday.
fabric
body: 78% polyamide, 22% 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!
Thinx air™️
Feel light as air in our breathable, quick-drying micromesh fabric. Perfect for when you need a lil ventilation down there.
I have several pairs of Thinx and these are my favorite. They are super thin, light, and don't feel like I have anything special on. They’re cute and comfy.
Leslie from San Francisco, CA, light to 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!
Like all of our undies, Thinx air™ absorbs your period. The main difference? The body of these undies is made with an ultra-thin, cooling, and sweat-wicking micro-mesh fabric that keeps you *extra* fresh and dry. We especially love these for travel, workouts, sports, or any activity. Bonus: these styles hang dry 2x faster than our original undies.
Thinx is machine-washable and reusable period-absorbing underwear — providing a more sustainable alternative to single-use disposable products. Thinx underwear for periods is designed in a range of absorbencies, from lightest to super, to support every stage of your flow. Every pair of Thinx period-absorbing underwear features our signature, innovative built-in technology — a moisture-wicking top layer, an absorbent core layer, and an outermost leak-resistant barrier. Check out our How Thinx Work page to learn more.
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.
Like all of our undies, Thinx air™ absorbs your period. The main difference? The body of these undies is made with an ultra-thin, cooling, and sweat-wicking micro-mesh fabric that keeps you *extra* fresh and dry. We especially love these for travel, workouts, sports, or any activity. Bonus: these styles hang dry 2x faster than our original undies.
Thinx is machine-washable and reusable period-absorbing underwear — providing a more sustainable alternative to single-use disposable products. Thinx underwear for periods is designed in a range of absorbencies, from lightest to super, to support every stage of your flow. Every pair of Thinx period-absorbing underwear features our signature, innovative built-in technology — a moisture-wicking top layer, an absorbent core layer, and an outermost leak-resistant barrier. Check out our How Thinx Work page to learn more.
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.
