This Arizona design doubles the buckle and ups the shine with oversized hardware and a glossy finish, grounded in Birkenstock's original contoured footbed, lined with ultra-smooth leather. This Arizona design doubles the buckle and ups the shine with oversized hardware and a glossy finish, grounded in Birkenstock's original contoured footbed, lined with ultra-smooth leather. This iconic German brand has become a wardrobe staple, thanks to an incomparable fit, laidback comfort, and a commitment to sustainable sourcing. Throughout the brand's many innovations, attention to craft has always stayed true: Each footbed is designed to adapt to the wearer's unique step, providing support no other shoe can.