It is 100% waterproof, it does have an anti-slip outsole, and it’s lined with Bogs Max-Wick to keep your feet dry. 100% waterproof Crafted with natural rubber for durable and flexible upper Lined with Bogs Max-Wick to keep feet dry Molded EVA footbed with DuraFresh bio-technology that activates to fight unwanted odors Non-marking and self-cleaning BioGrip anti-slip outsole