Proof Moderate Period Underwear (Brief)

By Proof


Proof was designed with a simple mission in mind: to empower women everywhere to live their best lives without worrying about leaks, and to reduce the amount of single-use plastic waste on our planet.

This basic brief has a classic fit offering full coverage that flatters all body types. With moderate leak coverage, these undies will draw moisture away from your body with proof's patented, multi-layer Leak-Loc™ system, while still feeling like your favorite pair. They are slim and highly absorbent to protect you from leaks, day or night.


Outer: 75% Nylon 25% Spandex 

Lining: 100% Polyester 

Lining: 69% Cotton 25% Polyester 6% Acrylate


USE : If you have a light to moderate flow, the Brief will handle your flow for an entire day - or night. We recommend wearing a pair of Proof in the right absorbency level for 12 hours, and then changing like you typically would after a shower, after getting up in the morning, or before going to bed in the evening.

WASH : Machine wash in cold water on a delicate cycle, using gentle detergents. To sanitize and refresh, use a few drops of tea tree oil or vinegar in the rinse cycle of your washing machine. Hand washing in cold water works, too!

Do not use hot water, harsh detergents, softeners or bleach when washing as it may compromise the technology in your undies.

Once washed, hang or lay flat to dry, it normally takes between 6-24hours to dry. For a quicker dry, blot any excess moisture and hang dry.

Designed in USA. Made responsibly in China.