The BIRKENSTOCK Arizona is a true classic that has delighted men and women with its timeless design for decades. Inspired by the cork original, this sandal is made of lightweight and highly flexible EVA ultra. This high quality, odorless synthetic material is tested for harmful substances, absorbs shock, is waterproof and soft on the skin. This makes it perfect for wearing at the beach, in the garden or in wellness and spa areas.Insole BIRKENSTOCK anatomically shaped EVAUpper/lining/sole: one-piece EVADetails: two straps, each with individually adjustable metal buckle, waterproof, washable, ultra lightweightUpper: EVAEVA (ethylene vinyl acetate) is a high quality, very light, elastic material with very good cushioning. As a result, it smoothes out slight irregularities in the ground and ensures that every step is cushioned smoothly.