Bbb heavy duty overshoes the best entry level shoe cover available for protection against cold conditions the 3 mm multi stretch neoprene with nylon reinforcements keep your feet dry and comfortable and its safe as well thanks to the 3m reflective reinforcements between sole and zipper tough shoe cover designed to give the best protection against the cold 3 mm multi stretch neoprene with nylon reinforcements on both sides industrial strength ykk zipper velcro rubber strap for a secure fit