Trusted By Thousands For Leak-Free Sleep
A Better Sleep Without Leaks!
“Sweet dreams only, regardless of your period”- Glamour
Patented
Absorbency Tech
Buttery
Soft
Machine
Washable
13M+ Made the switch.
What Makes It A Dream
Holds up to 5.5 super tampons
Holds up to 5.5 super tampons Built to handle heavy flow and light bladder leaks, so you never have to second-guess yourself.
No More Stained Sheets
Designed to handle overnight leaks - so you can sleep comfortably and wake up confident.
Wear, Wash, Repeat
Washable, reusable, and made to last. Because better protection shouldn’t come with daily waste.
Restful & Comfy Sleep
No shifting pads. No uncomfortable tampons. Just breathable, barely-there comfort that stays put.
Why They Work So Well
So you feel fresh and in-control.
Built-in protection that feels like nothing at all:
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1
Soft top layer removes moisture & fights odor
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2
Middle layer absorbs liquid quickly
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3
Leakproof layer keeps blood, sweat and pee from leaking through
Joanna Griffiths, Founder & President
13M+ Trust Knix Leakproof Protection
These are my 6th pair. Don’t have to worry about leaks or messy clothes.
Anna Verified buyer
Great product. Dream shorts are comfortable, protect, and fit like a dream.
Donna W. Verified buyer
The super leakproof are true to size and lovely to wear around when on your period. Super comfortable.
Amanda G. Verified buyer
I love these shorts. They're comfortable and as always I love the material.
Suzanne O. Verified buyer
These are perfect for night time, the fabric is slick and no fear of leaks!
Gabrielle B. Verified buyer
For me these are comfortable, easy to wear and move with me.
Heather A. Verified buyer
These help more for leakage than others I have tried. Great fit!
Mary B. Verified buyer
Comfy and confident going to bed in these during my cycle!
Jennifer S. Verified buyer
20% OFF Your First Order
Comfortable, convenient, and confident. Discover why you’ll love Knix Leakproof Underwear.
Product FAQ’s
What is LeakProof technology and how does it work?
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.
What’s a gussett?
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.
Which styles have more back or front coverage?
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!
What can Leakproof underwear be used for?
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.
How do I find out about my absorbency level?
Everything on the site is organized into Essential (for no leaks), Light, Moderate, Heavy and Ultra for those extra heavy periods. Check out this page to find your absorbency level and what that equals in tampons.