Hard plastic into a super flexible rubber strap band, more flexible, suitable for different shoe size * Easy to wear ,light weight, portable, outdoor seasonal * Suitable not only for outdoor climbing, but also for the city to use during the snowy weather, particularly suitable for the elder and children * Reduce the risk of injury from slips and falls when walk on ice, snow, mud and wet grass or other poor conditions. * Increase the productivity and enjoyment of a day on the winter outdoor.( Camping Hiking Fishing Hunting etc )