Period Underwear - Save up to 40%

Stock up on life-changing Leakproof Underwear at our best prices of the year!

50% off Everyday 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.

Everyday Underwear 

We’re making the world’s most comfortable underwear, so you can be the world’s most confident human. Seamless and smooth, and invisible under anything.

Looking for absorbent leakproof underwear? Shop Here

Teen Period Underwear

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

Shorts & Boxer Briefs

Full coverage styles made to match your every need.

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.

From ultra-soft fabrics and seamless styles to super absorbent underwear, you’re covered 24/7/365.