The outsoles, with 16 removable cleats per pair, provide excellent traction on ice and snow (not to be used on hard surfaces)Cleat wrench included with convenient internal pocket to keep wrench handy and available to change cleats on the jobExpandable gaiter top can roll-out to increase boot height to 20 inches840 denier polyester polyester upper fabric with waterproof membrane4mm polyurethane foam insulation for additional warmth2.5 mm polyurethane internal bootieDuraflex® quick-release closure with adjustable hook-and-loop strap system100% waterproofFits orthopedic footwearIf wearing over a work or combat boot, select one size up