Brand new in box Birkenstock Arizona 2 strap slides in sleek classic black EVA with matching buckles. Perfect summer shoes/ pool shoes or to use as indoor house shoes year round. Sizing is very flexible and these can easily be worn a size up or down. Straps are fully adjustable. Size 41, women’s 10. The Birkenstock Arizona is the classic summer sandal, now available in super lightweight and flexible EVA. The high-quality, odor-neutral material is also waterproof, washable and extremely easy to care for. Complete with an anatomically-shaped footbed with a deep heel, arch support and toe grip.