Leaks don't take days off and neither do we

Our patented Leak-Loc™ technology

Drop-Stop

Antimicrobial yarns are custom knit to create a super absorbent center layer which pulls in moisture and controls odor

Quik-Wick

Antimicrobial cotton lining pulls moisture away from your body, keeping you dry and comfortable

Seep-Shield Liner

A thin but powerful liner that has exceptional leakproof protection with breathable comfort

Our underwear is certified STANDARD 100 by OEKO-TEX®️ and has been successfully tested for harmful substances.
Thong style undies

Drop-Stop

Antimicrobial yarns are custom knit to create a super absorbent center layer which pulls in moisture and controls odor

Quik-Wick

Antimicrobial cotton lining pulls moisture away from your body, keeping you dry and comfortable

Seep-Shield Liner

A thin but powerful liner that has exceptional leakproof protection with breathable comfort

No-Flo

Ultra-light leakproof technology is fused to buttery soft, waterproof fabric for double the protection against leaks

Leak-Loc™ Edges

Leakproofed and reinforced to lock in moisture and prevent leakage

Our underwear is certified STANDARD 100 by OEKO-TEX®️ and has been successfully tested for harmful substances.

Drop-Stop

Antimicrobial yarns are custom knit to create a super absorbent center layer which pulls in moisture and controls odor

Quik-Wick

Antimicrobial cotton lining pulls moisture away from your body, keeping you dry and comfortable

Seep-Shield Liner

A thin but powerful liner that has exceptional leakproof protection with breathable comfort

No-Flo

Ultra-light leakproof technology is fused to buttery soft, waterproof fabric for double the protection against leaks

Leak-Loc™ Edges

Leakproofed and reinforced to lock in moisture and prevent leakage

Our underwear is certified STANDARD 100 by OEKO-TEX®️ and has been successfully tested for harmful substances.

Drop-Stop

Antimicrobial yarns are custom knit to create TWO super absorbent center layers which pull in moisture and control odor

Quik-Wick

Antimicrobial cotton lining pulls moisture away from your body, keeping you dry and comfortable

Seep-Shield Liner

A thin but powerful liner that has exceptional leakproof protection with breathable comfort

No-Flo

Ultra-light leakproof technology is fused to buttery soft, waterproof fabric for double the protection against leaks

Leak-Loc™ Edges

Leakproofed and reinforced to lock in moisture and prevent leakage

Extended protection

Extra long leakproof coverage from front to back keeps leaks locked in everywhere

Our underwear is certified STANDARD 100 by OEKO-TEX®️ and has been successfully tested for harmful substances.

Drop-Stop

Antimicrobial yarns are custom knit to create THREE super absorbent center layers which pull in moisture and control odor

Quik-Wick

Antimicrobial cotton lining pulls moisture away from your body, keeping you dry and comfortable

Seep-Shield Liner

A thin but powerful liner that has exceptional leakproof protection with breathable comfort

No-Flo

Ultra-light leakproof technology is fused to buttery soft, waterproof fabric for double the protection against leaks

Leak-Loc™ Edges

Leakproofed and reinforced to lock in moisture and prevent leakage

Extended protection

Extra long leakproof coverage from front to back keeps leaks locked in everywhere.

Our underwear is certified STANDARD 100 by OEKO-TEX®️ and has been successfully tested for harmful substances.
LEAK-LOC™ TECHNOLOGY icon
LEAK-LOC™ TECHNOLOGY

Our patented technology has multiple layers that will keep 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.

Proof handles any type of leaks
How can we help?

It’s a miracle

“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

TOP FAQS

Proof® undies are designed for comfort and all-day wear.  The multi-layer gusset is soft and supple.  Our Super-Light, Light and Medium 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 you’ll love the extra protection and the undies will still feel super comfortable.

Most women can use proof® undies as a replacement for pads, tampons, or cups. We suggest that women who have very heavy flows try our undies at home first.  If you determine that you need additional protection from a pad, tampon or cup, you can still wear the undies as a backup.  Please see our absorbency chart to determine which absorbency level best fits your lifestyle.

Absolutely. Our Liight undies have enough leakproof absorbency to replace a regular pantyliner.