Birkenstock Women's Madrid Big Buckle High Shine Black 1022541Birkenstock Women's Madrid Bid Buckle High Shine Black The original BIRKENSTOCK Sandal. A strap, a buckle, and a contoured cork footbed are masterfully combined to create the Madrid. An iconic slide with an amplified buckle accent. 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. Anatomically shaped cork latex footbed;