FitFlop Women's Charley 100% Leather Rubber sole Shaft measures approximately 15.5" from arch Heel measures approximately 1.5" Platform measures approximately 0.75 inches Boot opening measures approximately 14.5" around Aegis treated microfiber lining Adjustable strap Our patent-pending, original MICROWOBBLEBOARD(TM) 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!