5 Reasons Leakproof Underwear Is Becoming a Top Drawer Essential

91% of Menstruators Worry About Leaks

Not anymore. Leakproof underwear takes the worry out of the equation. Designed for all-day wear, our Leakproof styles provide reliable protection so you can go about your day with confidence. Whether you’re at work, at the gym, or running errands, you can feel secure knowing leaks are one less thing to think about.

You Can Sleep Through the Night—No Sheet Checks Required

Designed for overnight wear, Leakproof underwear keeps you covered while you rest. The ultra-absorbent core pulls moisture away from your skin, while full-coverage designs help prevent leaks from every angle. So go ahead—toss, turn, and sleep in.

They Hold Up to 9 Super Tampons’ Worth

For those who experience heavier flows, this is the game-changer you’ve been waiting for. When your flow is at its heaviest, there’s Ultra and Super Leakproof styles designed for heavy flow days and light bladder leaks.

We’ve Sold 13 Million Pairs for a Reason

Knix Leakproof Underwear is made with three ultra-thin layers that absorb moisture, resist leaks, and dry quickly—all while feeling just as soft and breathable as your favorite pair. No more period worries, just all-day confidence and comfort.

You Won’t Have to Use 12,000+ Disposables Throughout Your Lifetime

Leakproof underwear isn’t just for your period. It’s a game-changer for postpartum recovery, bladder leaks, workouts, and daily discharge—without the waste of single-use products. Plus, they’re easy to clean: just machine wash cold, lay flat to dry, and wear again and again.