From Vionic, the Gemma Corduroy Velvet Slippers feature: Corduroy velvet fabric upper Received APMA Seal of Acceptance Adjustable hook-and-loop strap  Slip on Fabric lining Flexible EVA midsole absorbs shock, reducing stress on feet, ankles and knees VIO MOTION Technology footbed with contoured arch support and deep heel cup Durable synthetic outsole Approx. 0.125" platform height Approx. 1.375" heel height It is recommended to wear your new pair for a few hours to allow your feet to adapt to the new support. Imported.