These Studded Anti-slip Pullovers give you added traction on icy surfaces. The Studded Anti-slip Pullovers have spikes that are set in tough flanges within a high-test rubber harness. Long-life studs are machined from Tungsten carbide steel. Fits oversized winter boots. USA made. Specify men's shoe size: S/M (6-9), L (10-12), XL (13-15) or 2XL (16+) from the drop-down menu above.