FitFlop Women's Zip Up Crush Leather Boot 100% Leather Imported Synthetic sole Shaft measures approximately 7.5" from arch Heel measures approximately 2" Platform measures approximately 1.00" Boot opening measures approximately 13" around Platform wedge boot in waxed leather featuring slouchy shaft and cuff with decorative tonal stitching Full-length instep zipper Our patent-pending, original MICROWOBBLEBOARD midsole technology fuses three diagonal sections of triple-density EVA into a single, seamless, underfoot platform to absorb shock, diffuse high-pressure spots, and make your feet feel amazing