Upper Material: Full Grain Leather Toe Box Stitching: Triple/Double Stitching Lacing: D-Ring Speed Lacing Zipper: YKK Full Length Zipper w/Velcro Zipper Keeper Lining: "Vapor Wick Lining Walotex Waterproof/Bloodborne Pathogen Membrane" Insole: Removable Insole Safety Toe: N/A Shank: Composite Shank Midsole: PU Midsole Outsole: 1A Carbon Rubber Outsole Heel New Generation Air Heel System Resistances: Slip Resistant Certification: ASTM F 1671 Approved