Icebug Women's Metro BUGrip Boot 100% Leather and polyurethane Rubber sole Shaft measures approximately 5 1/2" from arch Heel measures approximately 1 1/2" Platform measures approximately 3/4 Boot opening measures approximately 9 3/4" around Zip up convenience with grippy silicon zipper pull makes it easy with even gloved or tired hands Light fleece lining provides comfort to 0F Soft, stretchy, comfortable lycra collar minimizes irritation at boot top Solid heel pull loop makes on and off easy Stretch elastic inserts