Leakproof UltraThin No-Show French Cut
Bundle & Save: 3 for $75
• Our newest leakproof innovation provides more absorbency without the bulk.
• Great for peace of mind protection, the ultra-thin liner absorbs about the same as 2.5 super tampons or 1 regular pad’s worth.
• Our patented 360 LeakSeal™ technology locks in leaks at every edge.
• The carbon cotton gusset top layer wicks away moisture from your skin.
• These underwear feature our signature buttery soft fabric.
• No-show construction is designed to be 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.
• Classic mid-rise silhouette
• More butt coverage than Cheeky, less than Bikini styles
• Higher cut leg opening
• Ultra-thin, built-in liner
• Absorbs about 2.5 super tampons’ worth of liquid
• Quick dry gusset
• Soft, stretchy fabric
• Conforms to your body
• Bonded seams for a smooth look, no dig in
The fabric is designed to feel snug at first but relax with wash and wear for a perfect fit.🇺🇸 Free standard shipping over $100*.
Duty-free. (after discounts, before shipping + taxes)
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.
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!
- Claudia A.Verified BuyerHeight 5’6 – 5’8”Pant Size 12Pant Size Purchased MUsage Primary Period Protection8 minutes agoHeight 5’6 – 5’8”Pant Size 12Pant Size Purchased MUsage Primary Period ProtectionRated 5 out of 5 starsUltrathin French Cut
Love the style, perfect fit if you’re looking for something higher than a bikini but not as much as a high rise.
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? - Courtney L.Verified BuyerHeight 5’9 – 5’11”Pant Size 10Pant Size Purchased MUsage Period Back-Up4 days agoHeight 5’9 – 5’11”Pant Size 10Pant Size Purchased MUsage Period Back-UpRated 5 out of 5 starsfavorite pair
These are now my favorites and nothing else will do.
ComfortRated 4.0 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? - Carol F.Verified BuyerPant Size 14Size Purchased MUsage Light Bladder Leaks2 weeks agoPant Size 14Size Purchased MUsage Light Bladder LeaksRated 5 out of 5 starsLove the cut !
These undies are super soft , fit well , and do their job!
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentSizingRated 1.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeWas this helpful?
