Blundstone Women's 1448 Chelsea Boot 100% Leather Imported Synthetic sole Shaft measures approximately 5.75" from arch Heel measures approximately 1.25" Platform measures approximately 0.75 inches Boot opening measures approximately 10" around Anatomically shaped removable footbed Steel shank Poron xrd shock protection in heel-strike zone Tpu outsole and pu midsole for longer wear and comfort Premium leather upper