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

Cotton Brief $34.00

Cotton Brief

Heavy Days. Holds up to 2 tampons' worth.

Comfy, relaxed, breathable, no-stress fit — our Briefs feel just like your fave pair of cozy sweats, except cuter (and period-proof).

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Heavy Days. Holds up to 2 tampons' worth.

$34.00

what’s my size?

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Your hip measurement is the most important size to consider when trying to find the perfect fit.

select a sizecmin

xxs - hip 33-34"

size XXS


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size XXS if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.

xs - hip 35-36"

size XS


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size XS if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.

s - hip 37-38"

size S


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size S if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.

m - hip 39-40"

size M


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size M if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.

l - hip 41-42"

size L


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size L if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.

xl - hip 43-44½"

size XL


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size XL if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.

xxl - hip 45½-47”

size XXL


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size XXL if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.

3xl - hip 48-49½”

size 3XL


waist , measured at your natural waist (aka just under your belly button)


hip , measured right around the largest part of your booty 🍑


We recommend size 3XL if you wear jean sizes (US). 👖👌


*Because THINX uses special technology to keep you leak free, our sizes fit a bit more snug than your average run-of-the-mill undies.


Comfy, relaxed, breathable, no-stress fit — our Briefs feel just like your fave pair of cozy sweats, except cuter (and period-proof).


Interior Innermost 95% Organic Cotton, 5% Elastane; Middle breathable PUL, 95% Cotton, 5% Elastane; Outer 95% Organic Cotton, 5% Elastane.


To take care of your THINX, you rinse first , pop ‘em in a mesh laundry bag (this keeps your delicates, ya know, delicate), then cold wash and hang dry . Don’t use bleach or fabric softener! And yes, the rest of your clothes will be fiiine.


Try THINX for 60 days, if it doesn't help you period better,
we'll give you a refund. No questions asked!

Check out what some other real menstruating humans have to say about THINX:

Fabric

Interior Innermost 95% Organic Cotton, 5% Elastane; Middle breathable PUL, 95% Cotton, 5% Elastane; Outer 95% Organic Cotton, 5% Elastane.

Care Instructions

To take care of your THINX, you rinse first , pop ‘em in a mesh laundry bag (this keeps your delicates, ya know, delicate), then cold wash and hang dry . Don’t use bleach or fabric softener! And yes, the rest of your clothes will be fiiine.

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