Ultra Leakproof Zones+® Bikini
30% off
• Our most absorbent underwear and a big breakthrough in leakproof technology.
• Absorbs the same as about 9 super tampons or 4.5 regular pads worth of liquid.
• Features an extra long liner that runs high in the front and all the way up the back.
• Patented leakproof zones provide increased absorbency in the areas you need it most.
• Our patented 360 LeakSeal™ technology provides leak protection at every edge.
• No show bonded edges provide a sleek look that is invisible under clothes.
The ultimate solution for heavy flows and light bladder leaks provides maximum absorbency and confidence.
• Classic mid-rise silhouette
• Medium hip & bum coverage
• Absorbs the same as about 4.5 regular pads or 9 super tampons
• The absorbent gusset is 17-21” long, with extended coverage in the front and all the way to the back waistband
The fabric is designed to feel snug at first but relax with wash and wear for a perfect fit.
Body/Corps: 70% Nylon, 30% Spandex
Fresh Fix Technology®Gusset: Gusset 1: 95% Polyester, 5% Spandex;
Gusset 2: 100% Polyester;
Gusset 3: 92% Polyester, 8% Spandex;
Gusset 4: 70% Nylon, 30% Spandex with PBT
Additional Product Ingredient Information
🇺🇸 Free standard shipping over $100*.
Free expedited shipping over $150*. 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.
- ShaneVerified Buyer2 days agoRated 5 out of 5 starsABSORBENCY!
I am a full time nurse ( always on the run). I also have severe Anemia (superrr heavy periods!!) There have been times on that my sudden gushes would be so bad that even with a brand new flex foam pad I would end up leaking all the way through and onto the floor (embarrassing :(. At this point I’ve gotten used to bleeding through every night from Day 1-3. That for me it’s just normal. On a whim I bought these period panties and they are amazing! Day 1 period night absolutely no overflow/leaking!!!!!!!! And I specifically worn these ones a longer portion of the day since I knew I wouldn’t be sleeping very long at night! I’ve already bought 10 pairs but will definitely be buying more.
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentSizingRated 2.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeWas this helpful? - DVerified Buyer1 week agoRated 5 out of 5 starsUltra Leakproof Zones+ bikini
Great absorbency, glad I made the switch from disposable pads.
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 4.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - Patricia Molle F.Verified Buyer2 weeks agoRated 5 out of 5 starsLatest purchase
They new style fits well
ComfortRated 4.0 on a scale of 1 to 5Poor ExcellentEffectivenessRated 4.0 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?
