The Birkenstock Arizona is a genuine classic that has won the hearts of men and women for decades with its timeless design. The Adventure Crosstown is a sporty version of this model. It is designed with all adventurous and active Birkenstock fans in mind. The polyurethane sole is foamed onto the footbed in two layers, which results in excellent non-slip properties, great flexibility and a long life. The upper is made of especially thick, oiled nubuck leather with unfinished edges.