Features of the Salomon Men's X Ultra Mid 2 Spikes GTX Boot Membrane: Gore-Tex Performance comfort footwear Outsole: 9 Carbide-tipped metal spikes Non marking winter contagrip Chassis: Advanced chassis Midsole: Injected EVA Molded shank Sockliner: EVA shaped Footbed Ortholite Water resistant textile Waterproof PU coated leather Mud guard Protective heel cap Protective rubber toe cap Heel strap SensiFit Heel foam Gusseted tongue