Orthaheel - Lisa - Espresso - orthotic flip flops 06 M US Built-in orthotic footbed helps realign your foot and ankle to a natural position. Polyurethane upper feels soft and comfortable against the skin. Durable, textured rubber outsole provides great traction to keep you steady. Polyurethane upper and upper lining, EVA sockliner, insole and midsole, rubber outsole. Care: Wipe off with a damp cloth. Air dry.