Super Leakproof Underwear

Shop our latest innovation: the most absorbent leakproof period underwear ever. Super comfortable, super machine-washable, and super cute. Stop relying on disposables and enjoy worry-free protection from periods and pee.
New!
Super Leakproof Bikini
Super Absorbency
$30 USD Buy 3 Save 25%
New!
Super Leakproof Boyshort
Super Absorbency
$30 USD Buy 3 Save 25%
New!
Super Leakproof High Rise
Super Absorbency
$35 USD Buy 3 Save 25%
New!
Super Leakproof Thong
High Absorbency
$30 USD Buy 3 Save 25%
New!
Super Leakproof Cheeky
Super Absorbency
$30 USD Buy 3 Save 25%
New!
Super Leakproof Boyshort
Super Absorbency
$30 USD Buy 3 Save 25%
Rated 4.7 out of 5
321 Reviews
Comes in 3 Styles
Heavy Flow Period Kit
High - Super Absorbency
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From $125 USD Save over 25%
Rated 5.0 out of 5
1 Review
Comes in 3 Styles
Mixed Flow Period Kit
Medium - Super Absorbency
-
From $115 USD Save over 25%
Rated 5.0 out of 5
1 Review
New!
Super Leakproof Bikini
Super Absorbency
$30 USD Buy 3 Save 25%
Rated 4.7 out of 5
221 Reviews

Period Underwear - Because We Bleed

Stop relying on disposables and switch to beautiful, reusable, and comfortable period underwear. Whether you have a light flow or a heavy flow, we’ve designed protection that’s there for you throughout your whole cycle.

Incontinence Underwear - Sometimes We Pee A Little

Sneeze, jump, or giggle without a care! Knix leakproof undies were created so you can get back to enjoying life and not worry about light bladder leaks.

It's time to switch to Leakproof Underwear

Knix Leakproof Period Underwear FAQs

Super Leakproof Technology