Orthaheel Arcadia Removable premium biomechanical orthotic insole realigns your foot and ankle to natural position. Hook-and-loop strap makes for an easily adjustable fit. Wave pattern outsole gives the shoe great traction for a smooth and stable stride. Synthetic upper, jersey fabric upper lining, brushed nylon sockliner, EVA insole and midsole... Thermoplastic rubber outsole. Care: Wipe off with a damp cloth. Air dry.