Birkenstock Madrid Big Buckle Slide Sandal Brunt Orange New NWT An oversized buckle cinches the angled bridge strap of a sandal built on the legendary Birkenstock footbed for time-tested comfort and on-trend style. The EVA-cushioned footbed absorbs shock and mimics the shape of a healthy foot, while pronounced medial and metatarsal arches support the instep and ball of your foot. • Flat sole • Single wide strap with large adjustable metal pin buckle • Anatomically shaped cork-latex footbed • Leather upper and lining/synthetic sole