Highland 9805100 CrossTrax Anti-Slip Composite Overshoes Traction Device - Pair Made of a specially designed polyurethane webbing and galvanized steel cleats Webbing grips snow ice and other slippery surfaces such as mud and wet grass Bungee side cord and over-the-shoe hook and loop strap hold the CrossTrax securely in place Galvanized steel cleats grip ice Exceeds European anti-slip device standards for slip resistance tensile strength and corrosion resistance