Birkenstock Madrid VeganA strap, a buckle and a contoured cork footbed are masterfully combined to create the original Birkenstock sandal the Madrid. An iconic slide with a classic buckle accent now available in a vegan material. The upper is made from the skin friendly, hard wearing synthetic material Birkibuc. Anatomically shaped cork latex footbed Upper: Birkibuc Footbed lining: microfiber Sole: EVA Details: strap with an individually adjustable metal pin buckle; vegan