The Birkenstock Arizona is a true classic. Modeled on the cork sandal, it is made from ultra light and highly flexible EVA. The high-quality, odor-neutral EVA has been tested for harmful substances and combines numerous positive attributes. It’s waterproof, ultra lightweight, washable and therefore extremely easy to care for. Anatomically shaped Birkenstock footbed in EVA Upper/lining/sole: one-piece EVA Details: waterproof, washable, ultra lightweight