Leak-Resistant Essential Thong

Regular price$18

Buy 3+ and save 20%

Leak-Resistant Essential Thong Period Underwear | Super Light

Regular price$18

Buy 3+ and save 20%

A fan fav must for your underwear drawer

super-light AbsorbencyHolds up to 1 light tampon


Free shipping on orders $50+

60 Day Money-Back Guarantee

Absorbent Core

Regular Protection

Machine Washable

Unseen but powerful, our Essential Leak-Resistant Period Thong works wonders for your period, leaks, or simply as an everyday go-to pair. Cut from breathable and soft fabric in a mid-rise silhouette, it smooths the look of panty lines while providing leak-resistant protection. Add this thong to your period regimen as an alternative to a panty liner, or simply wear whenever you like! It's simple—make the switch.
  • Light spotting
  • Panty liner alternative
  • Back up a tampon
  • Discharge
  • Sweat

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


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
Multi-layer leak-resistant absorbent core

  • Moisture-wicking top layer
  • Absorbent core
  • Waterproof liner
  • 4-way stretch fabric

Add More Styles To Make A Bundle

Leak-Resistant Period

Essential Brief


Leak-Resistant Period

Everyday Brief



The Proof Essential Thong is equipped with Leak-Resistant light absorbency that holds up to 1 light tampon or panty liner making it perfect for everyday wear and comfort - especially if you don’t know when your period is going to arrive! The multi-layer moisture wicking lining in our period underwear helps you feel dry and confident. Great to use as an alternative to a panty liner or back up to a tampon.

Our Proof Essentials collection comes in bucket sizing giving you the size flexibility and confidence you need for THAT time of the month - hello comfort! The Essential Thong offers a slightly higher rise than the Proof Thong and is Leak-Resistant, holding up to 1 light tampon, whereas our Proof Thong is Leakproof holding up to 1 regular tampon. For more guidance, check out our absorbency chart and size guide.

These undies feel like your favorite underwear, only with leak-resistant super powers. The smooth and soft fabric will make these an everyday go-to with the slimmest of slim lining for that little extra protection you won’t even know is there. With no show panty lines, our barely there Thong keeps you skinny jeans or yoga pants ready no matter what time of the month. Whether you’re dealing with periods, sweat, or little leaks, you’ve got plenty of back up with this thong!

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