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 Boyshort
Super Absorbency
$34 CAD $28.90 CAD Buy 3 Save an Extra 10%
Rated 4.7 out of 5
303 Reviews
New!
Super Leakproof Bikini
Super Absorbency
$34 CAD $28.90 CAD Buy 3 Save an Extra 10%
Rated 4.7 out of 5
209 Reviews
New!
Super Leakproof Thong
High Absorbency
$34 CAD $28.90 CAD Buy 3 Save an Extra 10%
Rated 4.6 out of 5
105 Reviews
New!
Super Leakproof Cheeky
Super Absorbency
$34 CAD $28.90 CAD Buy 3 Save an Extra 10%
Rated 4.3 out of 5
89 Reviews
New!
Super Leakproof High Rise
Super Absorbency
$39 CAD $33.15 CAD Buy 3 Save an Extra 10%
Rated 4.7 out of 5
251 Reviews
Comes in 3 Styles
Heavy Flow Period Kit
High - Super Absorbency
-
From $139 CAD Price as Marked
Rated 5.0 out of 5
1 Review
Comes in 3 Styles
Mixed Flow Period Kit
Medium - Super Absorbency
-
From $129 CAD Price as Marked
Rated 5.0 out of 5
1 Review

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