Georgia Men's GB00106 Mid Calf Boot Leather and Synthetic Imported Rubber sole Shaft measures approximately 5.75" from arch Platform measures approximately 1.0 inches Boot opening measures approximately 11" around Oil- and Slip-Resistant Rubber Outsole TDC (Technology Driven Comfort) Polyurethane Insole Nylon Shank Non-Metallic 5 Inches In Height