Leakproof No-Show Thong
Mix & Match: Buy 4+ Save 15%, Buy 7+ Save 25%
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.
• Great for peace of mind protection, the ultra-thin liner absorbs about the same as 2.5 super tampons or 1 regular pads worth of liquid.
• Switch from relying on disposable products and stop worrying about leaks.
• Patented bonded edges help prevent against side leaks.
• Modal top layer of the liner helps move moisture away from your skin.
• These underwear feature our signature buttery soft fabric that is invisible under clothes, including workout leggings.
• Machine washable just like regular underwear.
Get the protection you want from periods and light bladder leaks while feeling comfortable and worry-free.
🇨🇦 Free standard shipping over $100.
Free expedited shipping over $150.
(after discounts, before shipping + taxes) All items ship from within Canada.
Within 30 days of delivery, you may exchange for another size, style or store credit. We’re unable to provide refunds on underwear.
- Jade1 week agoRated 5 out of 5 stars5 Stars
I have been a Knix girl for a few years now (I usually buy the essential no show thongs) - this is my first time buying the light leakproof styles, I ordered simply because I liked the colours & thought I'd give them a try! One thing I noticed is they're definitely more snug than the essential line, but I know that's because they design them that way for the leakproof aspect. I don't mind because I know they will loosen a little & form to my body with wear. I may be converted to the leakproof now, I appreciate that it will absorb excess moisture. Knix is my go to for all underwear, you literally can't feel them while you're wearing them. Also invisible under tight clothes which is a must.
FeaturedWas this helpful? - Gina M.Verified Buyer1 hour agoRated 5 out of 5 starsHeld up during a long intense run
OMG, was amazing. I have been having issues since some procedures and I have had kids. Everytime I have tried to increase my intensity running, I come back soaked in pee. Mentally was defeated, this was a game changer, thank you!
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? - Kaitlin5 days agoRated 5 out of 5 stars5 Stars
So comfy. Such high quality!
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How to wash
Machine Washable: Wash with like colors, cold setting with mild detergent, do not bleach, iron, or dry clean.
Always refer to our Fabric & Care section for best drying practices.
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.
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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!
