Everyday Leakproof Bikini

Essential, go-anywhere underwear with an ultra thin, built-in panty liner. Absorbs up to 3 tsp of moisture (approx. 2 tampons), great for light bladder leaks and as back-up period protection.

FYI we also make leak-proof underwear for teens. Click here for Knixteen

Classic Colours
Questions & Answers
Reviews

Leakproof Essentials

We went to Italy to find top-of-the-line textiles from world-class cycling. And put them in underwear.
Super Absorbent
Leakproof technology absorbs up to two tampons worth of liquid keeping you leak free.
Quick Dry Gusset
Dries 2-3 times faster than regular cotton and carbon cotton fights odor.
Bonded Construction
No more visible panty lines. Even under those super-tight yoga pants.
"I replaced all of my old undies with Knixwear leakproof undies."

– Holly O.

Read More Reviews

Knixteen

Period underwear for teens. Same great leakproof technology, now available in sizes for tweens and teens!

How It Fits

A classic mid rise silhouette with medium coverage through the hip and bum. Everyday underwear hugs more snugly than our Athletic line. On the edge of our size chart? Consider sizing up.

Fabrication

Body: 65% nylon, 35% Spandex
Gusset Liner: 86% cotton, 10% spandex, 4% carbon
Gusset: Fresh Fix Technology®

Care

Machine wash cold with mild detergent, do not bleach, lay flat to dry.

I was so excited I showed all my friends. Performs as promised.
Susanne P.

Tech To Take Your Life Back

Comfort

We're done with uncomfortable underwear. With 4-way stretch fabrics, your Knix move and mold to your shape.

Versatility

Each Knix product is tested by 1000s of real women to make sure it's ready for your real life.

Performance

Moisture-wicking. Anti-odor. Quick-dry. Because we know what it takes to conquer your day.

Everyday Leakproof Bikini Reviews

Q & A

KKate

Q: Is there a way to sign up for a waiting list, or some kind of notification when XL is back in stock? Will they be back in stock?

Knix

A: Yes! You should have the option to sign up for a Back in Stock notification located under the product page.