Birkenstock Madrid Big Buckle Narrow fit updates the classic single-strap sandal with an oversized metal pin buckle for an adjustable, refined look. Product image is indicative. Key attributes: Black | Oiled nubuck leather | Supportive cork-latex footbed | Lightweight, cushioning EVA outsole | Promotes a balanced foot climate | Oversized adjustable metal pin buckle | Adjustable single strap | Semi-exquisit anatomical cork and latex footbed | Smooth leather-lined insole | Iconic single-strap design | Oversized metal pin buckle | Open-edge stitching | Oiled nubuck leather upper | Dimensions & fit: Narrow fit | Composition & care: Upper: oiled nubuck leather | Insole: smooth leather | Footbed: cork and latex | Outsole: EVA