From Vionic, the Relax II Velvet Slippers feature: Velvet smooth upper Received APMA Seal of Acceptance Adjustable hook-and-loop strap closure Slip on styling Fabric lining Built-in VIO MOTION Technology footbed with contoured arch support, and a deep heel cup to provide stability & forefoot flexibility Flexible EVA midsole absorbs shock, reducing stress on feet, ankles and knees 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.