Arizona Big Buckle Hammered in High Shine Antique White Natural Patent Leather The legendary two-strap design from BIRKENSTOCK with amplified hammered buckle accent - the Arizona Big Buckle. The Big Buckle version features a large, elegant hammered buckle creating a bold yet minimalist design. The semi-exquisite footbed is fully lined with soft piumato leather, making it exceptionally comfortable. The upper is made from high-quality natural leather with a high shine finish.