Finally, a new way to go with the flow. Whether you have light spotting or a super heavy flow, we have a perfect fit for that time of the month. And with styles that hold up to 5 regular tampons or 10 tsp of liquid with front-to-back leakproof protection, you'll be covered all day or night.
Invisible protection for life's little leaks
Eliminate panty lines and light leaks
A classic silhouette with discreet leak protection
Cheeky style with built-in leak protection
Basic made better, protection from all kinds of leaks
Super absorbent and powerful leak protection
The ultimate in leak protection
A leak-resistant undie that smooths and soothes with light compression in all the right places.
Fully covered, fully comfortable.
A little extra beauty for your booty
Vintage style with powerful protection
We spent years meticulously designing Proof period underwear to protect you from leaks with the highest quality materials, so no drop can stop you.
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.