Leakproof Underwear - High & Super Absorbency

Shop our most absorbent comfortable leakproof period underwear, designed to protect you through your heaviest days - and nights. Stay fresh and dry, and enjoy worry-free protection from periods and pee.
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
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
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
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 High Rise
Super Absorbency
$39 CAD $33.15 CAD Buy 3 Save an Extra 10%
Rated 4.7 out of 5
251 Reviews
CoreLove High Rise
High Absorbency
$42 CAD $35.70 CAD
Rated 3.8 out of 5
100 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
The Dream Short
High Absorbency
$45 CAD $38.25 CAD
Rated 4.7 out of 5
672 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.

Sweat-Proof Underwear - Perfect for the Gym

Stay fresh and dry during your sweatiest of sweat sessions with our moisture-wicking, anti-odor and quick dry technology. And seamless design makes them invisible under leggings. Win, win.

It's time to switch to Leakproof Underwear

Knix Leakproof Period Underwear FAQs

Super Leakproof Technology