Shoe covers made of 100% high elastic silicone materials. Great waterproof and Thickened slip-resistant performance, safety and environmental protection, durable. Silicone Rubber - Non-Slip? This shoe & boot cover made of 100% premium non-toxic silicone rubber, which ensures durability for use and environmental protection. Shoe cover is also equipped with particular tread mechanism for preventing sole slipping. Lightweight & foldable design, space-saving, perfect stored in your backpack or hand bag. MULTY-RESISTANCE & USE: - Great use for this shoe cover is avoiding wet shoes or foot in rainy, slush, or snow days, which also can protect them against salt & dirt. Great for motorcycle riding, cycling, skiing, snowboard, fishing, climbing, weeding and other outdoor activities. UNISEX - suitable for men and women, you do not need to worry the rain will wet your beloved shoes.