Birkenstock Madrid Big Buckle is a single-strap slider that pairs a large adjustable pin buckle with the brand’s anatomical footbed for everyday comfort. Product image is indicative. Key attributes: Gray | Graceful taupe | Birko-Flor® | Anatomically shaped cork‑latex footbed | Cushioned EVA outsole | Adjustable strap with metal pin buckle | Easy slip-on slider | Suede footbed lining | Single wide strap | Large pin buckle | Silky gloss finish | Composition & care: Upper: Birko-Flor® | Footbed lining: suede (natural leather) | Footbed: cork‑latex | Outsole: EVA | Wipe clean with a damp cloth. Do not machine wash or tumble dry. Air dry away from direct heat.