Birkenstock Arizona Essentials Eva Sandals (Narrow) - Black Anatomically shaped BIRKENSTOCK footbed in EVA Upper/lining/sole: one-piece EVA Details: waterproof, washable, ultra lightweight “Made in Germany” 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.