Workout underwear

Leakproof Brief
Holds up to 3 Regular Tampons or 6 Teaspoons

A classic silhouette with discreet leak protection

Everyday Undie
Holds 1 Light Tampon or Panty Liner

Invisible protection for life's little leaks

3 Different Absorbency Levels




Leakproof Thong
Holds up to 1 Regular Tampon or 2 Teaspoons

Eliminate panty lines and light leaks

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

Cheeky style with built-in leak protection

Leakproof High Waisted Smoothing Brief
Holds 1 Light Tampon or Panty Liner

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

Leak Protective Workout Undies

Workout undies with built in leak protection. From spotting and discharge to sweat and bladder leaks when you jump or squat, Proof has you covered. Now, you can work out without worrying about leaks.

Workout Underwear with Protection

Underwear designed so no drop can stop you. Proof undies absorb sweat and protect from bladder leaks, spotting, and periods so that you can focus on giving your A-game. Smooth edges disappear underneath clothing - even your favorite workout leggings - and multi way stretch fabric moves with your body for a perfect fit.

Top FAQs

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Are Proof undies seamless?

For an invisible look under your favorite leggings, we recommend The Thong, Everyday Undie, or Brief. All of our styles have smooth edges for a flattering fit under clothing with a discreet leak protective core without added bulk.

Are Proof workout undies breathable?

We keep things easy breezy - our undies are breathable and soft for an ultra-comfy feeling.

What pair of Proof undies is best for workouts?

All of our undies were made to move with you while providing discreet protection. For an invisible look under your favorite leggings, we recommend The Everyday, The Thong, or The Brief.

Can Proof undies replace pads and pantyliners?

Yes! Proof leakproof underwear for bladder leaks were designed with built-in protection to keep you covered from light to moderate incontinence. Instead of bulky pads that shift or unflattering disposable underwear, Proof undies keep you protected from bladder leaks while feeling comfortable and confident.

Will Proof undies feel fresh and dry?

Yes! Proof underwear were specifically designed for all of life’s little leaks. Our Super-Heavy styles hold up to 10 teaspoons of liquid!

Are Proof leak protective undies washable?

Yes! All Proof undies offer strong protection, but should be washed gently. Machine wash on gentle using cold water and gentle detergent, and hang or lay flat to dry.

Go with your flow

There's Proof for every phase of your flow, from surprise sprinkles when you sneeze to super heavy periods and beyond.