LAST SIZE AVAILABLE :100% Waterproof Crafted with high quality, natural and durable rubber Lined with 2mm EverDry and Bogs Max-Wick to absorb and evaporate sweat Rebound rubber footbed with DuraFresh keeps feet comfortable and fresh Bogs Stabilizer provides natural fit and support Rebound technology in outsole and midsole provides lasting comfort BioGrip anti-slip outsole combines restaurant standard slip and chemical resistance LAST SIZES AVAILABLE : Oliver Batik Black clogs are a superior, functional clog with a super popular print. Notably, these clogs are commercial grade, chemical and slip resistant. They're 100% waterproof, crafted with durable natural rubber and lined with 2mm neoprene, specifically designed to absorb and evaporate sweat. They have a rebound rubber footbed, a mid arch stabiliser for all day comfort. The Oliver Batik clog is 100% waterproof, crafted with durable natural rubber and lined with 2mm neoprene, specifically designed to absorb and evaporate sweat. They have a rebound rubber footbed, a mid arch stabiliser for all day comfort. Yes these clogs are commercial grade, chemical and slip resistant.