Ariat Womens Catalyst Prime Western Boot Performance Leather Imported Synthetic sole Shaft measures approximately 12.25" from arch Heel measures approximately 1.25" Platform measures approximately 0.25 inches Boot opening measures approximately 12.75" around Cobalt VX technology for temperature management, advanced support and enhanced flexibility X-Static pure silver sock liner for permanent anti-odor performance Premium full-grain leather foot and upper Leather lining Goodyear welt