Athletic Leakproof Boyshort

Comfortable, breathable, and functional: the underwear with an ultra-thin, built-in liner that absorbs up to 3 tsp (2 tampons) of leaks, period blood, or sweat.

Please note: All underwear are final sale.

Classic Colors
LTD Edition
Questions & Answers

Leakproof Essentials

We've harnessed cutting-edge textile technology to give you that extra confidence and comfort you deserve.
Super Absorbent
Leakproof technology absorbs up to two tampons worth of liquid.
Quick Dry Gusset
Dries 2-3 times faster than regular cotton. And carbon cotton helps eliminate odor.
Seamless Construction
Sits flat against your skin to eliminate panty lines and for superior comfort.
"Best undies ever! Comfortable and do exactly what they say they will!"

– Holly O.

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Jennifer S.

What You're Wearing


Constructed using 4-way stretch fabrics, your Knix match your every move and mold to your unique shape. It's comfort unlike anything.


Knix products are tested by 1000s of women to ensure they're ready for real life. And everything that comes with it.


Moisture-wicking. Anti-odor. Quick dry. And anything else we can do to improve your intimates.

Athletic Leakproof Boyshort Reviews

Athletic Leakproof Boyshort
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