Baffin Mustang (Little Big Kid) Synthetic Imported Synthetic sole Shaft measures approximately 10" from arch Heel measures approximately 1" Platform measures approximately 1 inches Boot opening measures approximately 18.75" around Pro-tech microfiber and rip-stop nylon upper TPR shell Pull-on style with hook-and-loop strap at instep Multilayer inner boot system offers comfort and warmth TPR outsole provides maximum traction