Birkenstock Madrid Big Buckle Slide Sandal - Size 39 in Cognac color EUC condition - worn only once! 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 Oiled nubuck leather upper/leather lining/synthetic sole