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You're about to enter the Thinx Periodical, a blog with *adult-ish* content. Do you want to proceed?

period-proof underwear

now in styles that absorb up to 4 tampons’ worth

2x the absorbency. 2x the protection. Meet Thinx Super β€” our new undies that absorb up to 4 tampons’ worth of your flow. πŸ’ͺ

Introducing Thinx air β€” our signature period-proof undies, now in a ultra-light, cooling micromesh fabric.

Make a bold statement with Ocean – our *special edition* color for Earth Day. Reduce your plastic footprint with these 5 styles. 🌊

Meet Dusk, a smoky hue that’s the best of both worlds β€” a go-to neutral *and* a dreamy color. Snag it in three of our best-selling styles.

Thinx can be worn as a back-up or replacement to traditional period products. Depending on your flow (light, medium, heavy), Thinx can replace pads and liners or be worn with tampons and cups for extra protection.

how do
Thinx work?

how do
Thinx work?

Our period-proof undies hold up to 4 tampons’ worth β€” yet they look and feel like regular underwear.

learn more

try 'em

free shipping on 1st order w/ account

60 day money-back guarantee

no-hassle returns


Get started with a few favorites from menstruators like you!

the girl who bled a river — and it was fine

let’s period better, together

Get period inspo, see new styles, and smash the taboo with us on Instagram. Follow us @shethinx and share your experience using #Thinx.

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