Our patented Leak-Loc® technology
Drop-Stop
Interlock lining creates an absorbent center layer that pulls in moisture
Quik-Wick
Quick-dry lining pulls moisture away from your body to provide a dry, comfortable feeling
Seep-Shield Liner
A thin but powerful liner with exceptional leak-resistant protection and breathable comfort
Drop-Stop
Antimicrobial fibers are custom knit to create a super absorbent center layer that inhibits the growth of bacteria and fights odors
Quik-Wick
Quick-dry lining pulls moisture away from your body to provide a dry, comfortable feeling
Seep-Shield Liner
A thin but powerful liner that has exceptional leak proof® protection with breathable comfort
No-Flo
Ultra-light leak proof® technology is fused to buttery soft, waterproof fabric for double the protection against leaks
Leak-Loc® Edges
Leak proof® and reinforced to lock in moisture and prevent leakage
Drop-Stop
Antimicrobial fibers are custom knit to create a super absorbent center layer that inhibits the growth of bacteria and fights odors
Quik-Wick
Quick-dry lining pulls moisture away from your body to provide a dry, comfortable feeling
Seep-Shield Liner
A thin but powerful liner that has exceptional leak proof® protection with breathable comfort
No-Flo
Ultra-light leak proof® technology is fused to buttery soft, waterproof fabric for double the protection against leaks
Leak-Loc® Edges
Leak proof® and reinforced to lock in moisture and prevent leakage
Drop-Stop
Antimicrobial fibers are custom knit to create TWO super absorbent center layers that inhibit the growth of bacteria and fights odors
Quik-Wick
Quick-dry lining pulls moisture away from your body to provide a dry, comfortable feeling
Seep-Shield Liner
A thin but powerful liner that has exceptional leak proof® protection with breathable comfort
No-Flo
Ultra-light leak proof® technology is fused to buttery soft, waterproof fabric for double the protection against leaks
Leak-Loc® Edges
Leak proof® and reinforced to lock in moisture and prevent leakage
Extended protection
Extra long leak proof® coverage from front to back keeps leaks locked in everywhere
Drop-Stop
Antimicrobial fibers are custom knit to create THREE super absorbent center layers that inhibit the growth of bacteria and fights odors
Quik-Wick
Quick-dry lining pulls moisture away from your body to provide a dry, comfortable feeling
Seep-Shield Liner
A thin but powerful liner that has exceptional leak proof® protection with breathable comfort
No-Flo
Ultra-light leak proof® technology is fused to buttery soft, waterproof fabric for double the protection against leaks
Leak-Loc® Edges
Leak proof® and reinforced to lock in moisture and prevent leakage
Extended protection
Extra long leak proof® coverage from front to back keeps leaks locked in everywhere.
LEAK-LOC™ TECHNOLOGY
Our patented technology has multiple layers that lock in your leaks
Breathable + Comfy
Super soft, breathable fabric keeps you comfortable and secure
really (really) dry
Our unique interlock lining wicks away moisture for all-day dryness
Fights Odor
Antimicrobial fibers reduce odor and help you feel cool and confident
Let us show you the Proof
Proof's patented technology can hold up to 5 tampons or 10 tsp of liquid. Don't believe us?
See the proof for yourself.
Don't just take it from us
“So great!! If you’re thinking about getting these just do it! So comfortable and protective. Will be ordering more for sure.”
Amy
“Now my period underwear are my favorite underwear”
Sierra
“I’ve used other period underwear before and I was shocked at how much better these were — I used to bring 2+ pairs of the other brand just in case. I was more than fine with one pair of Proof underwear!”
Adrianne
From light sprinkles to heavy flows, we're here for you
You've got questions
Proof undies are designed for comfort and all-day wear.
Our Super-Light, Light and Moderate undies feel just like your favorite pair of regular underwear. Our Heavy and Super-Heavy styles may feel slightly more substantial due to their highly absorbent construction, but they will still feel super comfortable.
Most importantly, you’ll love the extra protection.
In a word, yes!
Our super heavy styles hold 5 tampons or 10 teaspoons of liquid and can replace panty liners and pads as well as replacing or backing up tampons and cups.
If you're unsure about switching to Proof completely, you may feel more comfortable using Proof undies as a back-up for your menstrual cup or tampon.
Panty liners are a thing of the past with Proof. Welcome to modern leak protection - no liners needed!
