Women's strappy sandal with premium upper materials Durable rubber outsole designed to withstand everyday wear Lightweight, flexible EVA midsole absorbs shock, reducing stress on feet, ankles, and knees Adjustable backstrap with buckle closure to ensure perfect comfort and fit Built-in VIO MOTION Technology footbed featuring contoured arch support, with shock-absorbing cushioning, deep heel cup to provide stability, and forefoot flexibility. For the greatest comfort, we recommend wearing your new Vionic footwear 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.