underwear that absorbs your period

One person sitting in one of our heavy absorbency styles, Heavy Cotton Brief.

in styles that hold up to 5 regular tampons’ worth

A close-up of our best-selling style, Hiphugger (in Black), on two different bodies.

in styles that hold up to 5 regular tampons’ worth

shop Thinx

a postpartum necessity

Introducing our curated postpartum sets — for the ease, comfort, and support you need most.

give $10 get $10

For each friend you refer, you earn $10! They'll also get $10 off their first purchase.

customize your Set

Save up to 20% when you mix & match 3+ styles.

This button only controls animation and does not control the visibility of content in the banner. The banner content is visible to the screen reader at all times.
  • free, no hassle returns & exchanges

  • 60-day money-back guarantee!

  • p.s. *free* standard shipping on your first order when you create an account

  • free, no hassle returns & exchanges

  • 60-day money-back guarantee!

  • p.s. *free* standard shipping on your first order when you create an account

  • free, no hassle returns & exchanges

  • 60-day money-back guarantee!

  • p.s. *free* standard shipping on your first order when you create an account

  • free, no hassle returns & exchanges

  • 60-day money-back guarantee!

  • p.s. *free* standard shipping on your first order when you create an account

using Thinx is simple

comfortable

just like regular underwear

absorbent

from light to super

machine-washable

just wash, hang dry, and reuse

now trending

now trending

New & improved true plus sizes are here.

Overnight protection = no more period nightmares.

Styles that hold up to 5 regular tampons’ worth.

Meet Thinx air™, featuring ultra-thin micromesh.

Endometriosis Isn’t Just a “Painful Period Disease”

Our Team’s Fave Styles of Period Underwear

styles for you

Thinx - Sleep Shorts - Black - Front
5 out 5 droplets

2 colors

Thinx - HS Hiphugger - Black - Front
5 out 5 droplets

4 colors

Thinx - Hiphugger - Black - Front
4 out 5 droplets

2 colors

Not sure which Thinx are right for you? Take our quick quiz.

Thinx - Cotton Boyshort - Black - Front
5 out 5 droplets

3 colors

Thinx - Super Cotton Brief - Black - Front
5 out 5 droplets

4 colors

Thinx - Super Hi-Waist - Black - Front
5 out 5 droplets

3 colors

Need extra protection for those heavy days?

Thinx - Cotton Thong - Black - Front
1 out 5 droplets

1 colors

Thinx - Thong - Black - Front

Thong

$25.00

1 out 5 droplets

2 colors

Thinx - Cheeky - Black - Front

Cheeky

$30.00

1 out 5 droplets

3 colors

For those just-in-case days when you still want to feel stylish.

Let’s find the right pair of Thinx for your ~flow~


absorbency


tampons

liners

pads

cups

Thinx for every flow

Thinx for every flow

giving rise to menstrual equity

With your help, the Thinx Inc. GiveRise program is advancing access to period products and supporting organizations championing reproductive healthcare, community giveback initiatives, and more. When you buy Thinx or make an in-cart donation, you’re helping fund periods near and far.

it’s okay to have questions!

Press play on any of the questions below to see a simulated chat experience in the video located in the "Chat video" Region.

how often should I change them?

how often should I change them?

how do I know what size to get?

how do I know what size to get?

how would Thinx work for me?

how would Thinx work for me?

ready to get your Thinx?

Two people with periods featured in our best-selling style, Hiphugger (in Black).

ready to get your Thinx?

shop all styles