Diluvio 2 all road shoe covers added flexibility thanks to the open construction under the foot this bootie can be used with road or mtb shoes so you can cover all your cold weather rides the seams are sealed like on a wetsuit and we even finished the top edge to help prevent water from coming into the bootie reflective details on the back help make this the do it all bootie 3mm thick neoprene waterproof sealed seams reflective heel panel high durability panel under foot adjustable velcro c