, 
, email, or your own personal referral URLstart period-ing better
Wear THINX as a replacement or back-up to traditional period products.
Depending on your flow (light, medium, heavy), our period-proof undies can replace pads, liners, and tampons, or be worn with tampons and cups for extra protection.
Like regular underwear, but so much better. ✨🙌
patented leak-fighting tech
Every pair of THINX is made with patented 4-layer technology for ultimate period protection.
1. moisture-wicking cotton
A natural fiber closest to your skin for added softness and breathability.
2. anti-microbial lining
That’s just a science-y way of saying it fights bad odors and bacteria.
3. super-absorbent fabric
Holds up to 2 regular tampons’ worth so you never feel too *moist*.
4. leak-resistant barrier
So you stay fresh ‘n’ dry, even when you feel blah and crampy.
but, wait — how do I use them?
Every person and every period is unique, which is why it’s good to ~know your flow~. See how THINX works for these one-of-a-kind menstruators.
Alina (wearing Boyshort) has a painful and inconsistent flow, so she uses THINX to back-up her tampons.
Glynis (wearing Hi-Waist) is a cup user with a heavy flow. She wears THINX alone on light days.
Karen (wearing Sport) has a light flow and uses THINX instead of tampons.
rinse & reuse
THINX are washable, reusable, and simple to care for. After rinsing, wash them separately, or with the rest of your laundry (just steer clear of bleach and fabric softener!).
rinse immediately
after use
after use
cold wash on
laundry day
laundry day
hang dry
get started
Try THINX at home first, where you’re most comfortable, to test how it works for your flow. We recommend starting with our best-selling Hiphugger, which holds up to 2 regular tampons’ worth.
If you have a light flow, you may be able to wear THINX instead of traditional period products, like pads and liners. If you have a heavy flow you may choose to wear THINX as a back-up to your tampon or cup.
