Shop Leakproof and Leak-Resistant Underwear

Whether you're feeling flirty, wanting all the comfort, or just trying to find something with the right amount of skin coverage, Proof offers a wide range of styles that appeal to all women. Our patented collection of Proof undies cover a wide range of leak types and period types. Each style offers unique coverage, ranging from 1/2 teaspoon & 1/2 tampon up to 10 teaspoons of liquid & 5 tampons, take a look at all our styles below to find the perfect fit for you!

Leak-resistant Everyday Undie
$25
Holds up to 1 Light Tampon or Panty Liner

Invisible protection for life's little leaks

Leak-resistant High Waisted Smoothing Brief
$29
Holds up to 1 Light Tampon or Panty Liner

A leak-resistant undie that smooths and soothes with light compression in all the right places.

Leakproof Thong
$25
Holds up to 1 Regular Tampon or 2 Teaspoons

Eliminate panty lines and light leaks

Leakproof Brief
$35
Holds up to 3 Regular Tampons or 6 Teaspoons

A classic silhouette with discreet leak protection

Leakproof Lace Cheeky
$37
Holds up to 3 Regular Tampons or 6 Teaspoons

Cheeky style with built-in leak protection

Leakproof Bikini
$39
Holds up to 4 Regular Tampons or 8 Teaspoons

Basic made better, protection from all kinds of leaks

Leakproof Mesh Hipster
$39
Holds up to 4 Regular Tampons or 8 Teaspoons

Super absorbent and powerful leak protection

Leakproof Hipster
$43
Holds up to 5 Regular Tampons or 10 Teaspoons

The ultimate in leak protection

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Heating Patches for Menstrual Cramps
$12

Nothing should cramp your style.

The world's best underwear... period.

We spent years meticulously designing Proof with the highest quality materials, so no drop can stop you.

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Shop All Leak Proof Underwear Styles

Unique Styles for All Period Types