Birkenstock Arizona Sandals Dusty Blue / White / Organge EVA 37EU Womens Size 6 - 6.5 Nar-Med Width New in Box (box may be damaged) Classic Arizona with two top straps with adjustable buckle closures. Made from light, flexible and waterproof EVA (Ethylene Vinyl Acetate). Anatomically shaped BIRKENSTOCK footbed. Upper/footbed lining/sole: a single piece of EVA. Waterproof, washable, ultra lightweight.