FEATURES KEEN.FUSION rubber for lightweight durability Machine-washable for easy care Eco Anti-Odor for natural odor control MATERIALS Washable upper contains recycled P.E.T. plastic bottles Lace-lock bungee system with adjustable hook-and-loop strap Quick-dry lining for active use EVA insole with arch support for all-day comfort Non-marking KEEN.FUSION rubber outsole CARE These shoes are machine washable. Select cold water and a gentle cycle, and remove to air dry. Then go get them dirty again! Gently worn condition