Washable, polyester webbing upper High-traction rubber outsole pods Compression molded lightweight EVA midsole Quick-dry lining for active use Metatomical, molded EVA footbed High-traction rubber outsole pods PFC-free durable water repellent Cleansport NXT™ for natural odor control* Metatomical Footbed Design internal support mechanism is anatomically engineered to provide excellent arch support and cradle the natural contours of the foot All KEEN water sandals are machine washable. Use a small amount of detergent, wash on gentle cycle and air dry