Orthaheel, Wave, Thong Sandals,Chocolate, Men's 12/ Women's 13 US Synthetic Synthetic sole Orthotic footbed realigns your foot and ankle to a natural position. EVA midsole absorbs shock, reducing stress on your feet. Flexible rubber outsole provides extra grip, keeping you steady as you walk. Mesh webbing upper, neoprene upper lining, EVA insole, rubber outsole. Care: Wipe off with a damp cloth. Air dry.