Features & Benefits of the Vionic Casandra Women's Orthotic Sandal - TideVio-Motion Support is an innovative approach to foot health: Vionic conceals biomechanical technology into each shoe. All-day comfort is a difference you can feel.Deep heel cup provides essential stability.Contoured orthotic footbed for addictive supportVio-Motion Support is designed to provide you with proper alignment, which can help reduce common aches and pains by aligning you from the ground up.Proven to effectively alleviate heel pain. (Based on a peer-reviewed clinical study funded by Vionic on patients experiencing moderate, non-traumatic 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.Received APMA Seal of Acceptance.Available in women's whole sizes.If you are a half size, we recommend ordering the nearest size downFits medium/wide B/C widths.For the greatest comfort, we recommend wearing your new Vionic footwear or orthotics for just a few hours for the first few days to allow your feet to adjust to the new level of orthotic comfort and support.Within one to two weeks you should find the product completely comfortable and supportive. Vionic Casandra Thong Sandal (Women's) - Pewter