Vulcanized rubber construction, factory tested 100% waterproof. Insulated boot with sponge rubber padding and deep cleated outsole for sure traction. Layered toe cap for longer wear and aggressive padded knee for protection and comfort. Inside knee harness for alternative wear (hip) and adjustable side strap for better fit (hip). Draw string for better fit. Heel kicker for easy On/Off. 1 year manufacturer warranty.