From Vionic, the Grove Leather Mini Wedge Thong Sandals feature: Premium leather upper Slip on styling with hook-and-loop strap for a secure fit Non-functional buckle accent Synthetic lining Built-in VIO MOTION Technology footbed featuring contoured arch support and a deep heel cup to provide stability & forefoot flexibility Lightweight, flexible midsole absorbs shock, reducing stress on feet, ankles & knees  Durable synthetic outsole Approx. 1" heel height Imported. It is recommended to wear your new pair for a few hours to allow your feet to adapt to the new support.