Birkenstock Arizona EVA Two Strap Sandals in Khaki 。Birkenstock EVA Two-Strap Sandals in Olive NIB Men - Size 11 Features Material: Made from a single piece of molded EVA (ethylene vinyl acetate), which is a high-quality, odorless, and elastic material. Design: Features the signature two-strap design with individually adjustable pin buckles. Functionality: They are waterproof, washable, and shock-absorbent, making them ideal for the beach, garden, or post-workout. Comfort: Includes an anatomically shaped footbed designed to provide arch support and cradle the heel