Period-proof underwear that keeps you dry & #leakfree. ✨ shop now

Run, jump, skip, sleep in our new training shorts (with built-in period-proof undies). Ready, set, GO!

Double your THINX defenses w. our soft, durable 100% organic tampons. shop now

We have a 60-day trial *period* (that's 100% satisfaction guarantee, y'all). 🎉 shop now

Y'all ready to plié all day??? Check out our brand new Period-Proof 👯 activewear.

#Goals: Makin' mom + Aunt Flo proud. Peep our THINX Foundation at THINX.org

We know, this sounds pretty weird. Not weird, tho. Just awesome.

THINX can replace pads & liners *and* be used as a backup or replacement to tampons, cups, or sea sponges (ya know, if you’re into that), depending on your flow.

They absorb up to 2 tampons' worth of blood, yet they look and feel like a regular pair of underwear.

Try 'em risk-free. If you're not period-ing better within 60 days, we'll give your $$ back.

Try 'em risk-free. If you're not period-ing better within 60 days, we'll give your $$ back.

This is the story of a girl who bled a river and... it was fine.

Get the skinny on period shame & what we're doing about it.

This is the story of a girl who bled a river and... it was fine.

Get the skinny on period shame & what we're doing about it.

Shopping bag

Your shopping bag is empty, but it doesn't have to be

for Free US Shipping on your 1st order

Access your account & orders history.

don't have an account?

back to cart

For faster checkout, order tracking...

back to cart