Birkenstock: Arizona Birkibuc Sandal(Adult Unisex)For a comfortable fit and classic style, slip on the Birkenstock Arizona Birkibuc Sandal. Made with Birkibuc, a sturdy synthetic material, these sandals look and feel like nubuck leather and have a smooth backing that won't irritate your skin. Underfoot, a contoured cork footbed molds to feet with a deep heel cup and roomy toe box to cushion without sacrificing arch support. This take on the Arizona is lined with supple suede and backed with a lightweight EVA sole for shock absorption and traction. These core Birkenstock sandals are finished with dual buckles at the strap for a perfect fit everytime.