Sidi Discovery Rain Motorcycle Boots (41, Black) Membrane equipped to add a waterproof yet slightly breathable barrier between the elements and the riders feet. Soft rubber sole for maximum grip. Top grain leather and Technomicro material base construction. Replaceable micro adjustable cam lock buckle system with memory retention straps. Trockenfuss quality liner for quick sweat evaporation. Slim, cool non-bootie design. Rigid, shock resistant, anatomically shaped heel for maximum added protection.