CrossTrax are made of specially designed polyurethane webbing and galvanized steel cleats. The webbing grips snow and other slippery surfaces such as mud and wet grass. Galvanized steel cleats grip ice and are easy to walk in with a normal, smooth stride. Bungee side cord and over-the-shoe hook and loop strap hold the CrossTrax securely in place on any type of shoe from sneakers to boots. CrossTrax are easy to use for anyone with no pulling, stretching, no sharp metal cleats or coils, and just slip on type. Never worry about losing a metal cleat and having to replace it. They exceed European anti-slip device standards for slip resistance, tensile strength and corrosion resistance. Lightweight, foldable, and small enough to store in a purse, backpack, glove box or locker. They are packaged in a handy re-usable weather resistant storage pouch.