From Dansko, the Frankie Leather Chelsea Booties feature: Leather upper Patented stapled construction Slip on with gored sides APMA Seal of Acceptance Back pull tab Inner frame provides stability Padded instep collar for extra comfort Anti-fatigue rocker bottom promotes forward foot motion for shock absorption and energy return Roomy reinforced toe box allows toes to move comfortably with plenty of "wiggle room" Protective heel counter allows the heel to move up and down freely while providing lateral stability Leather-lined, breathable, single-density open cell PU foam sockliner Contoured PU midsole provides arch support PU outsole with a wide heel strike for stability Approx. 0.75" platform height Approx. 2" heel height Imported.