Propet Women's OrthoWalker III Sandals Durable, slip-resistant polyurethane outsole provides shock absorption. Removable insole makes room for full-length orthotics. Soft leather or nubuck upper is hand-stitched for flexibility. Leather or nubuck upper, neoprene upper lining and sockliner, leather insole, polyurethane outsole. Care: Leather: Buff with a leather cleaner or polish. Wipe off with a dry cloth. Nubuck: Lightly brush with a soft to medium brush.