Astrology Collection Leakproof UltraThin Bikini
Bundle & Save: 3 for $75
Astrology Collection Leakproof UltraThin Bikini
Bundle & Save: 3 for $75
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.
The very latest in leakproof innovation – get more absorbency without any extra bulk! Features an ultra-thin liner that absorbs the same as about 2.5 super tampons, and 360LeakSeal™ technology that locks in leaks at every edge. You get the protection you want from periods and light bladder leaks, so you can feel super comfy and worry-free every single day of the month.
Plus, we've added our logo to the liner, so you can tell the difference between these pairs and our lighter leakproof underwear.
• Classic mid-rise silhouette
• Medium hip & bum coverage
• Ultra-thin, built-in liner
• Absorbs about 2.5 super tampons’ worth of liquid
• Quick dry gusset
• Soft, stretchy PerformaStretch® fabric
• Conforms to your body
The fabric is designed to feel snug at first but relax with wash and wear for a perfect fit.🇨🇦 Free standard shipping over $100.
(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.
Your leakproof questions, answered.
*Offer valid on select underwear styles on knix.com and knix.ca, while supplies last. When you purchase three or more eligible styles from the same category, you’ll receive the corresponding offer:
Light: 3 for $60
Heavy: 3 for $75
Overnight: 3 for $99
Exclusions: Leakproof CoreLove High Rise, Leakproof Modal Rib Boxer Brief, Luxe Modal Leakproof Sleep Boxer, Leakproof Cotton Modal Bikini, Leakproof Cotton Modal High Rise, all Thigh Saver styles and Last Call items.
Discount is automatically applied at checkout and is based on eligible items in your order. No rain checks or price adjustments on previous purchases.
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.
- Julie A.Verified BuyerHeight <5’5”Pant Size 6Pant Size Purchased MUsage Light Bladder Leaks1 week agoHeight <5’5”Pant Size 6Pant Size Purchased MUsage Light Bladder LeaksRated 5 out of 5 starsPerfect and super cute!
Perfect, just perfect! Invisible yet super efficient! No need to worry, Knix got you covered and keeps you dry!
The pattern and color are super cute too.
Since I switched to Knix for my undies and activewear, I cannot go back. No this else equals Knix.
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? - Anna C.Verified BuyerPant Size 8Pant Size Purchased MUsage Sweat2 weeks agoPant Size 8Pant Size Purchased MUsage SweatRated 5 out of 5 starsComfy and nice print
I got these as part of my birthday gift. They're great quality and the right amount of thinness that it doesn't show underneath clothing but not so thin that they feel like they'll fall apart. They're comfortable and doesn't cut into me. I don't wear for the leakproof abilities so I can't comment on that aspect.
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? - Kendra W.Verified BuyerHeight <5’5”Pant Size 16Pant Size Purchased XLUsage Primary Period Protection2 weeks agoHeight <5’5”Pant Size 16Pant Size Purchased XLUsage Primary Period ProtectionRated 5 out of 5 starsReview
I won’t go through a period without these 🩲
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated -1.0 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?