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how to find your perfect fit

Your hip measurement is most important when trying to find the right size underwear. For some styles, it's also helpful to know your waist measurement.

click a size measurement for more info cm in

XXS

XS

S

M

L

XL

XXL

3XL

hip

33-34"

35-36"

37-38"

39-40"

41-42"

43-44½"

45½-47"

48-49½"

size M

Waist 24"
measured at your natural waist (aka just under your belly button)

Hip 39-40”
measured right around the largest part of your booty 🍑

We recommend size M if you wear jean sizes 30-32 (US). 👖👌

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

choose your unit

in cm

select a size

xxs - hip  33-34"

xs - hip  35-36"

s - hip  37-38"

m - hip  39-40"

l - hip  41-42"

xl - hip  43-44½"

xxl - hip  45½-47"

3xl - hip   48-49½"

size M

waist 34", measured at your natural waist (aka just under your belly button)

hip 30", measured right around the largest part of your booty 🍑

We recommend size M if you wear jean sizes 2-6 (US). 👖👌

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