Heavy Period Kit - High Rise
30% off




Heavy Period Kit - High Rise
30% off

Super Leakproof® No-Show High Rise (2 Pack)
Color: Chambray, limited edition

Super Leakproof® No-Show High Rise (2 Pack)
Color: Dune

Super Leakproof® Dream Short
Color: Nostalgia, limited edition
30% off
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.
Get confident protection for your whole cycle - even your heaviest days - with our Heavy Flow Period Kit. Also includes a Free Wash Bag.
This kit includes:
- 4 Super Leakproof® No-Show High Rise (Chosen Colors) - confident protection that looks and feels like regular underwear, absorbing the same as about 4 super tampons.
- 1 Super Leakproof® Dream Short (Chosen Color) - our comfy and confident sleep short designed for overnight period protection.
Just choose your size and your colors, and switch from relying on disposable products to wearing incredibly comfortable and machine-washable underwear!
High Rise: Sits at the natural waist and provides medium coverage through the bum
🇨🇦 Free standard shipping over $100.
(after discounts, before shipping + taxes) All items ship from within Canada.
EXCHANGE ONLY Items on sale during our Anniversary Sale are exchange only. For items with a 20% or more discount you may exchange for another item or store credit. No refunds.
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!
- Veronica P.Verified Buyer44 minutes agoRated 5 out of 5 starsSuper comfy and protective!
These shorts have excellent coverage. I move around quite a lot when I sleep and I'm confident in having no leaks with these.
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEase of UseRated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - Jamie B.Verified Buyer16 hours agoRated 5 out of 5 starsLove it
I absolutely love Knix!!!
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentSizingRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeWas this helpful? - Gail M.Verified Buyer2 days agoRated 5 out of 5 starsexcellent product
works well and fits without bulk - I will buy more
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentSizingRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeWas this helpful?