Maelstrom Commando 9" Mil Spec Military Combat Boot with Vulcanized Sole and Spike Protection Leather Meets Military Specifications. Slip/oil resistant VULCANIZED rubber outsole with Panama pattern. Polishable leather and cordura nylon upper. Steel shim within sole for spike protection. Rust proof eyelet and speed hook lacing system. Padded collar for extra comfort. Steel shank for support and stability. Removable comfort cushion insert. Two metallic vents for drainage and cooling. One year manufacturer's warranty. Available in multiple colors.