Absorbency Levels
Patented protection for leaks of all kinds

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Holds up to 1 Light Tampon or Panty Liner

Great For

panty liner replacement

light spotting

odor reduction

Regular Lining

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Center gusset protection

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Holds up to 1 Regular Tampon or 2 Teaspoons

Great For

panty liner replacement

light period leaks

odor reduction

Regular Lining

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Center gusset protection

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Holds up to 3 Regular Tampons or 6 Teaspoons

Great For

moderate period leaks

replace or back up a tampon, pad, or cup

odor reduction

Extended Lining

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Extended gusset protection

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Holds up to 4 Regular Tampons or 8 Teaspoons

Great For

moderate bladder leaks

replace or back up a tampon or cup

odor reduction

Full Lining

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Full front to back protection

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Holds up to 5 Regular Tampons or 10 Teaspoons

Great For

moderate bladder leaks

maximum overnight period protection

odor reduction

Full Lining

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Full front to back protection

Don't just take it from us

Read real reviews from Proof users

“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

LEAK-LOC® TECHNOLOGY icon
LEAK-LOC® TECHNOLOGY

Our patented technology has multiple layers that lock in your leaks

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 to help keep you dry. 

Decreases Odor icon
Decreases Odor

Technical fibers inhibit the growth of bacteria and decreases odor