Super Leakproof® No-Show Bikini
30% off
• Our super leakproof technology is great for heavy days and worry-free protection.
• Absorbs about the same as 3 super tampons or 1.5 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.
• Classic mid-rise silhouette
• Provides medium hip & bum coverage
• Built-in liner, 9" long
• Quick dry extended 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*.
Duty-free. (after discounts, before shipping + taxes)
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.
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!
Many people refer to them as period underwear or period panties. But leakproof underwear covers you for all of life’s leaks, including periods (even your heaviest flows), sweat, light bladder leaks, postpartum, and discharge.
- Ashleigh P.Verified Buyer13 hours agoRated 5 out of 5 starsLove this!
Fit better than expected, but worth the buy!
ComfortRated 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 LargeEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentEase of UseRated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - AmandaVerified Reviewer21 hours agoRated 5 out of 5 stars"Super" Awkward - Be Aware :0
I don't generally write reviews (even though I personally find them very useful) but I felt I needed to in this instance. I love Knix underwear and tried the Super Leakproof. I wore a pair travelling to Scotland and had a rather awkward experience at the airport. When they put me through the security x-ray machine it highlighted my crotch area as suspicious. The guards were seriously confused staring at the screen. I was DYING but also at the same time found it HILARIOUS. They ended up waving me off (thankfully opting for that instead of a more thorough search) If someone doesn't have my quirky, weirdo sense of humour, be warned if you are going to wear the underwear travelling! Otherwise, love the comfort and fit of the underwear.
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 2.0 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? - Donna21 hours agoRated 5 out of 5 stars5 Stars
Great
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