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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 that works

Meet our *new* collection of Saver Sets! Stock up on 2 to 3-pair packs of our best-selling styles — and save $$$.

Meet Dusk, a smoky hue that’s the best of both worlds — 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.

Say hi to THINX (BTWN): our *new* line of super-absorbent underwear specially made for young people with periods. 🙋💞

re.t.a is here: the first FDA-cleared reusable tampon applicator (aka our latest innovation for a better period *and* better planet).

how do
THINX work?

how do
THINX work?

Our period-proof undies hold up to 2 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

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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