period underwear

now in styles that absorb up to 4 regular tampons’ worth

No more restless nights on your period spent worrying about leaks. Our Sleep Shorts are *finally* here. 🌙

Meet Chroma, a down-to-earth print perfect for feeling 🕯️at peace 🕯️ with your period.

Let’s take things to the next level! It’s the retro style you love — now with 2x the absorbency. Super Hi-Waist is here.

There’s no better feeling than *finally* getting to wear your Thinx. Shop our new colors, Juniper & Pine, in our Classic and Cotton styles.

Thinx can replace or work as back-up leak protection to other period products. Depending on your flow, our undies can be worn instead of pads and liners, or to support tampons and cups.

how do
Thinx work?

how do
Thinx work?

Our period undies hold up to 4 tampons’ worth — yet they look and feel like regular underwear.

learn more

try ’em

  • free shipping on 1st order w/ account
  • 60 day money-back guarantee
  • free, no-hassle returns


Get started with a few favorites from other people with periods!

what does a more sustainable period look like?