Ridge AIR-TAC Zipper Steel Toe Leather Work Boots - Leatherbull (Free U.S. Shipping) Leather / Nylon Steel Shank / ASTM Approved Steel Toe YKK Full Length Zipper/ Velcro Zipper Keeper / Triple Stitching D-Ring Speed Lacing / Locking D-Ring Vapor Wick Lining / Removable Insole Tactical Air Heel System / PU Midsole / Carbon Rubber Outsole