Orthaheel - Strike Black - Mens Slip-on with Orthotics 08 M US Rubber sole Soft polyurethane upper makes for a comfortable fit and is easy to clean. Treaded rubber outsole allows you to walk with durability and traction for a stable stride. Premium orthotic footbed assists in realigning your foot to a natural position. Polyurethane nubuck upper, polar fleece upper lining, EVA insole and midsole, nylon shank... Rubber outsole. Care: Wipe off with a damp cloth. Air dry.