Luxe Modal Leakproof Sleep Boxer
30% off
Luxe Modal Leakproof Sleep Boxer
30% off
Designed with a cloud-soft modal fabric blend and shadow-sheer waistband detailing, this Leakproof Sleep Boxer lets you rest easy without worry of leaks.
• High rise silhouette
• Extra hip & bum coverage
• Absorbs about 3 regular tampons’ worth of period blood
• Quick dry, odor reducing gusset
• Lightweight, naturally breathable, super soft modal fabric
• Non-digging shadow-sheer waistband
🇺🇸 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.
- Fiona H.Verified Buyer4 minutes agoRated 5 out of 5 starsSo comfy!
These are so comfortable! Great to sleep in, but also fit well during the day to smooth things out! They feel lightweight and breathable. I've now bought several pairs. I wear for period and/or light bladder leaks. Love.
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? - Ashleigh P.Verified BuyerYesterdayRated 5 out of 5 starsLeak proof sleeping!
No matter what I always had some spillage while sleeping but not anymore! Need to get more
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? - Nicole M.Verified Buyer2 days agoRated 5 out of 5 starsSo soft!
Love this style. The fabric is so cozy and soft. Great high rise coverage.
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?
