the only patented undies for leaks

This is really (really) leakproof underwear

LEAK-LOC™ TECHNOLOGY Icon
LEAK-LOC™ TECHNOLOGY
Our patented technology keeps your leaks locked in
BREATHABLE + COMFY Icon
BREATHABLE + COMFY
Super soft, breathable fabric keeps you comfortable and secure
REALLY (REALLY) DRY Icon
REALLY (REALLY) DRY
Our unique interlock lining wicks away moisture for all-day dryness
DECREASES ODOR Icon
DECREASES ODOR
Antimicrobial yarns reduce odor, helping you feel cool and confident

We’re here to help you with any kind of leak!

Find the right pair for your leaks:
A saving grace for white pants
All our undies are great for periods!
From light to super-heavy period leaks See All
If your sneezes create sprinkles… you need these.
All our undies work for leaks!
From light sprinkles to heavy tinkles See All
maternity Icon
The Everyday Undie
Leaks during pregnancy can be a real mother.
Holds 1/2 Regular Tampon

or 1/2 Teaspoon

Learn More
The Brief
From work to workouts and weekends
Holds 2 Regular Tampons

or 4 Teaspoons

Learn More
The Lace Cheeky
Flirty (even on your flow)
Holds 2 Regular Tampons

or 4 Teaspoons

Learn More
The Thong
Leggings approved
Holds 1 Regular Tampon

or 2 Teaspoons

Learn More
postpartum Icon
The Bikini
The leaks no one warned you about (except us).
Holds 4 Regular Tampons

or 8 Teaspoons

Learn More
The Mesh Hipster
The leaks no one warned you about (except us).
Holds 4 Regular Tampons

or 8 Teaspoons

Learn More
The Hipster
The leaks no one warned you about (except us).
Holds 5 Regular Tampons

or 10 Teaspoons

Learn More
sweat Icon
The Everyday Undie
Undies that wick it good.
Holds 1/2 Regular Tampon

or 1/2 Teaspoon

Learn More
The Thong
Undies that wick it good.
Holds 1 Regular Tampon

or 2 Teaspoons

Learn More
everyday Icon
The Thong
An undie upgrade for every day of the week.
Holds 1 Regular Tampon

or 2 Teaspoons

Learn More
The Brief
An undie upgrade for every day of the week.
Holds 2 Regular Tampons

or 4 Teaspoons

Learn More
The Lace Cheeky
An undie upgrade for every day of the week.
Holds 2 Regular Tampons

or 4 Teaspoons

Learn More
discharge Icon
The Thong
A catchall for in-between days and after sex.
Holds 1 Regular Tampon

or 2 Teaspoons

Learn More
The Brief
A catchall for in-between days and after sex.
Holds 2 Regular Tampons

or 4 Teaspoons

Learn More
The Lace Cheeky
A catchall for in-between days and after sex.
Holds 2 Regular Tampons

or 4 Teaspoons

Learn More
spotting Icon
The Everyday Undie
See spot disappear.
Holds 1/2 Regular Tampon

or 1/2 Teaspoon

Learn More
The Thong
See spot disappear.
Holds 1 Regular Tampon

or 2 Teaspoons

Learn More
It's a miracle Icon

It's a miracle

Read All Reviews
“There are so many worries I have on my period and Proof underwear solved them for me.”
Dominique
Medium Periods
Bought The Brief
“If anyone out there has a heavy flow, I highly suggest this brand. They are worth every penny!”
Karen
Heavy Period
Bought The Bikini
“I wear mine after sex to clean up... messes. (You know!) I don’t think I’ll ever go back to normal undies.”
Claire
Discharge
“Now my period underwear are my favorite underwear!”
Sierra
Spotting
Bought The Thong
“Nothing ever works for me and I was shocked. No leaks, not even a hint of moisture!”
B
Postpartum
Bought The Hipster

From light sprinkles to
heavy flows, we're here for you