Period Underwear

Everyone’s switching to period protection that’s absorbent, machine-washable, and comfortable. Bundle & Save up to 25% on all Leakproof Underwear.

Leakproof Underwear

Shop our collection of comfortable leakproof period underwear designed for medium and light days, light leaks, and sweat. Stay fresh and dry all day long with beautiful, machine-washable undies.

Super Leakproof Underwear

Designed to protect you through your heaviest days - and nights. Absorbs up to 6-10 tsp of liquid.

Teen Period Underwear

Moisture-wicking, odor-crushing, life-changing leakproof undies.

Reusable Pads

NEW Reusable Pads! Leak-free protection designed with a comfortable barely-there feel. Super-thin, and easy-to-wash Leakproof pad that you can wear and rewear. Now available in super-absorbent Regular and Overnight styles for confident protection 24/7.

Stock Up & Save

Get all the period protection you need with Knix leakproof underwear kits. Find your perfect assortment of absorbent, comfortable, and machine-washable underwear, and enjoy worry-free protection no matter how heavy your flow.

Reusable period underwear that truly works - absorbent, leak resistant, comfy and easy to wash. Find your perfect style today!

Your leakproof questions, answered.