New Birkenstock White Sandal Size 8 (39) The original BIRKENSTOCK Sandal. A strap, a buckle, and a contoured cork footbed are masterfully combined to create the Madrid. The upper is made from the skin-friendly, hard-wearing synthetic material Birko-Flor®. • Anatomically shaped cork-latex footbed • Upper: Birko-Flor® • Footbed lining: suede • Sole: EVA • Details: one strap with an individually adjustable metal pin buckle • "Made in Germany" Sticker residue on one shoe