The Craft Siberian Bootie is designed with a wind- and waterproof fabric and a brushed inside to protect against cold and wet.All seams are covered with waterproof tape on the inside3mm neoprene with polyurethane-coating on top and brushed backside for best protection and warmthReflective prints for extra safetyVelcro adjuster at topReinforcements around the bottom of the bootie