Vionic Tide Casandra Pewter Leather Sandal Flip Flop Women's US size 9-Proven to effectively alleviate heel pain.-Uppers: Leather.-Lightweight, flexible medium-density EVA midsole absorbs shock, reducing stress on feet, ankles and knees.-Vionic Technology is biomechanically designed to hug your arches and support your feet in comfort. Vionic sandals' built-in orthotic is shown to be effective in helping to treat heel pain (plantar fasciitis).-Outsole: Durable Rubber.Good pre-owned condition • Flaws None•Smoke free home •Style words- walking, travel, vacation, resort, cruise, summer, orthopedic