Durango Women's Harness Boot 100% Leather Synthetic sole Shaft measures approximately 10" from arch Heel measures approximately 1 3/4" Platform measures approximately 1/2" Boot opening measures approximately 12 3/4" around Oil-resistant rubber outsole ; Steel shank ; 2 inch Strider heel ; 14.5-inch calf circumference Cushion insole with flex forepart ; Taped Side Seams; Metal Hardware