Leakproof Cotton Modal High Rise







Leakproof Cotton Modal High Rise
Knix period underwear and pads are now sales tax-free in Canada.* We celebrate improvements to the accessibility and affordability of essential period care products.
Confident underwear made from super soft cotton modal fabric. Featuring our patented leakproof technology, they absorb about the same as 2 super tampons, and wash easily in the machine.
(product previously named Cotton Super Leakproof™ High Rise)
🇨🇦 Free standard shipping over $100.
(after discounts, before shipping + taxes) All items ship from within Canada.
Your leakproof questions, answered.
Our Leakproof technology features a built-in absorbent liner. Depending on the style you choose, the absorbency can range from about 1-17 tsp of liquid. The result? Confident protection from sweat, discharge, periods, and light bladder leaks.
*Period underwear and pads are exempt from federal sales tax in Canada. They are also exempt from most provincial / harmonized sales taxes. But are subject to the following provincial sales tax rates which will apply to orders shipped to the following provinces and to orders purchased in retail stores located in the following provinces: British Columbia and Manitoba: 7% PST; Saskatchewan: 6% PST.
Need more info? Click here


A gusset is essentially a liner. It’s where you’ll find our leakproof technology. It’s built into the crotch section of the underwear.
Coverage at Knix comes in all shapes and sizes. If we’re talking about silhouettes,, we go all the way from thongs to boxers.
We also offer high rise styles, like the Leakproof UltraThin No-Show High Rise, that sits just above the natural waist and gives full coverage through the stomach, hip & bum.
For extra liner coverage, look for undies that have an “extra-long liner” (usually 10”-14”), like in our Dream Short. And our Ultra Zones+ also have full bum coverage, too.
Have a suggested style or coverage? Just let us know. We love the feedback!
- Torra B.Verified Buyer38 minutes agoRated 5 out of 5 starsUndergarments
Very nice fit. And feel.
Was this helpful? - Sabrina K.Verified Buyer1 hour agoRated 5 out of 5 starsComfort in confidence
I wear these to protect against light bladder leakage and hey are seriously a game changer. I can walk around all day, take long buses (that don’t have bathrooms! 🫢), go to the gym and never feel self conscience about leaks. I used to use liners (reusable ones and disposable) but, aside from needing to carry fresh and used ones around or adding to the global garbage crisis, they never made me feel as “safe” and confident as these underwear. This style in particular is literally just like my regular underwear - no extra bulk anywhere, which is great once you’ve hit a “certain age” and temperature regulation is KEY! These are the “secret, sexy undies” to help you feel confident and unstoppable 🙂.
Was this helpful? - Serena S.Verified BuyerYesterdayRated 5 out of 5 starsNot Just For Periods
I love these underwear not just for periods but for everyday!
Was this helpful?