Birkenstock Arizona NU Desert Buck Black Sandals. The Birkenstock Arizona model is a true classic that has been delighting both men and women for decades with its timeless design. The striking structured upper material achieves a very natural look in this version. The upper material is made of soft, high-quality nubuck leather, which impresses with its natural and rustic look. Two straps, each with an individually adjustable metal tang buckle Made in Germany