Regular price $35 USD Sale price $23 USD

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Regular price $35 USD Sale price $23 USD
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heavy Absorbency holds up to 4 regular tampons

Color Black

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Our Leakproof Essential Period Brief features a classic fit with full coverage and makes for a great go-to, everyday style. Designed with heavy absorbency, these undies help draw moisture away from the body with our patented, multi-layer Leak-Loc® technology. A super absorbent style for those heavy days, without sacrificing comfort. 


Absorbs heavy periods, sweat, and discharge

Features a classic fit with full coverage

Can be used as a pad, tampon, or cup alternative

Washer friendly, hang to dry


Outer: 75% Nylon 25% Spandex
Top Lining: 100% Polyester
Inner Lining: 70% Polyester 30% Cotton
Bottom lining: 100% Polyester

Care Instructions:
Reusable & machine washable: When you're done wearing, simply wash with cold water and gentle detergent, then hang or lay flat to dry


Absorbent Zone; Regular
Center lining protection with absorbent multi-layer core
Leak-Loc® bonded edge technology

  • moisture-wicking top layer
  • absorbent core
  • waterproof liner
  • water-resistant outer fabric
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What type of leaks is the Essential Brief undie best suited for?

There are 3 levels of absorbency offered in our washable Proof Essentials Briefs - The Leakproof Brief in Heavy absorbency is great for those who need that extra level of protection. Great for overnight period and leak protection. The classic brief cut provides a little extra coverage and best of all, the super slim absorbent lining is perfectly comfortable for everyday wear, these look and feel just like regular undies.

What is the difference between the Proof Essentials Brief and the Proof Brief?

Our Proof Essentials collection is made with a stretchy fabric giving you the size flexibility you need for THAT time of the month - hello comfort! The essential brief comes in 3 levels of absorbency up to heavy leak protection but without the full lining, making it the perfect go-to style for everyday wear! For more guidance, check out our absorbency chart and size guide.

Is Proof Essentials period underwear machine washable?

Yes! All Proof Essentials undies are reusable underwear and offer built-in protection, but should be washed gently. Machine wash on gentle using cold water and gentle detergent, hang or lay flat to dry.