Feel sure-footed on icy sidewalks or a frozen lake when you have on Wright & McGill Sure Grip Safety Treads. Made of a tough rubber material, it fits over most shoes and boots to grab any slippery surface. The Sure Grip Safety Treads have a molded spike construction that features four rows of steel "teeth" under the front of the foot. Very popular for ice fishing, the rubber cleats are easy to pull on and off your shoes or boots. 2X-Large fits shoes 13+.