Rider Women's Key-W 100% Manmade Rubber sole Heel measures approximately 3/4" Soft, waffle-textured EVA insole offers comfort, support and air circulation. Flexpand outsole is durable, lightweight and flexible, thanks to millions of micro-air chambers. Water-resistant design makes this sandal a great choice to wear to the pool or beach. EVA upper and insole, PVC Flexpand outsole. Care: Wipe off with a damp cloth. Air dry.