Invisible protection for life's little leaks
A leak-resistant undie that smooths and soothes with light compression in all the right places.
Eliminate panty lines and light leaks
A classic silhouette with discreet leak protection
Cheeky style with built-in leak protection
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.
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.
Yes! Proof workout underwear were designed with built-in protection to keep you protected from all of life’s little leaks - whether it’s spotting in between periods, sweat, or light bladder leaks - we’ve got you covered!
We curated a special collection of leak-protective undies in a variety of absorbencies that are ideal for working out. Breathable stretch fabric moves with your body for a seriously comfortable fit, while smooth edges stay hidden under clothing. But the biggest bonus is a thin, absorbent lining that pulls moisture away from the body and controls leaking, so you can feel confident and work it without worry.
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.
Washing Proof workout underwear is easy! Proof undies feature strong protection, but should be washed gently. Simply toss in the washing machine on a delicate cycle, using cold water and mild detergents. Hang or lay flat to dry. No washing machine? Hand washing in cold water with a gentle detergent works great, too!
More helpful tips to care for your pair:
-Don’t wring or twist your undies - be gentle when washing Proof
-Hot water, harsh detergents, and bleach can damage the absorbent technology in Proof undies, so be sure to use cold water and mild detergent
-Hang or lay flat to dry - do not put in the dryer
-Proof undies have a super absorbent core that can take between 6 and 24 hours to dry. Heavier absorbency pairs have more layers of absorbent material, and will take longer to dry than our light pairs. To expedite the drying process, blot away excess moisture from the gusset before laying flat or hanging to dry.
-Want a refresh? To make your period undies fresh and remove any lingering odor, use a few drops of vinegar or tea tree oil during the rinse cycle of your wash - voila! So fresh and so clean.
We keep things easy breezy - our undies are breathable and soft for an ultra-comfy feeling. Our breathable material allows air to penetrate the fabric, keeping you cool. Even our leak-protective core features lightweight, breathable fabric that absorbs moisture without feeling damp of clammy!
Our collection of workout underwear is ideal for absorbing sweat and any other leaks that accompany a workout - from bladder leaks to spotting and discharge.
60 day leak free guarantee
FREE SHIPPING on all orders OVER $50
With a pair for every flow, you’ll be able to find your Proof™-perfect fit.
Our Patented Leak-Loc™ technology keeps you leak-free learn more
Proof™ provides serious protection from bladder leaks, without added bulk.
Discrete protection with room to accommodate your growing bump.
Designed with new moms in mind, leak protection without the bulk.
Go ahead, break a sweat. Our moisture-wicking fabric also reduces odor.
Undercover protection for every day of the week.
Perfect for daily discharge, Proof™ keeps you fresh and dry.
For in-between days, these undies keep you spotless all day long.
Holds up to 1 Light Tampon or Panty Liner
panty liner replacement
Holds up to 1 Regular Tampon or 2 Teaspoons
light period leaks
Holds up to 3 Regular Tampons or 6 Teaspoons
moderate period leaks
light bladder leaks
replace or back up a tampon, pad, or cup
Holds up to 4 Regular Tampons or 8 Teaspoons
moderate bladder leaks
heavy period leaks
replace a pad
replace or back up a tampon or cup
Holds up to 5 Regular Tampons or 10 Teaspoons
maximum overnight period protection
Your hip and waist measurements are the most important size when finding the perfect fit.
Measure around your body as shown.
Find your waist measure by leaning over to one side. Where your body naturally creases is your where you will place the tape. Measure parallel to the ground.
For your hip measurement, turn to the side and locate the fullest part of your booty. Place the tape around your body, parallel to the floor, around the widest and fullest part of your hips and tush.
If your measurements fall into different size categories, your hip measurement will be most accurate.