LEAKPROOF GUIDE

The #1 Leakproof Brand in North America

Your heavy flow hero. Your light leak champion. You can count on Knix leakproof underwear for a soft, seamless-look and feel with unbelievably thin, but mighty absorbent liners. 

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Absorbency Level Hero-MB

Find your absorbency level

Your leakproof questions, answered.

“Not sure how I lived 37 years without these.”

- Carolyn on the Super Leakproof Bikini

“Sometimes I sneeze and pee a bit and now I don’t have to worry as I stay dry!!!”

- Ronalda B. on the Super Leakproof Bikini

“I have switched to Knix for life. The leakproof have saved me so many times.”

- Jennifer S. on the Leakproof Thong

8 million+ pairs sold

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11 Years
10+ Years of Experience
Lab & Wear Tested
Lab-Tested & Wear-Tested
Reviews
40,000 5 Star reviews