Special rubber compound stays strong and retains elasticity in subzero temperatures for maximized durability ,New and improved toe-box design enhances fit and function along with a 360-degree spike pattern that provides more push and lateral grip ,Unique support hole on heel strap provides easy adjustment and makes it easy to put on and take off ,6 Tungsten Carbide Due North Ice Diamond Spikes are integrated into a proprietary rubber tread design for improved traction ,Pack contains 1 pair