Birkenstock Madrid Birko-Flor Copper sandals size US W6 M4 EU37 Slightly used No box The BIRKENSTOCK Madrid is the oldest member of the family of models, making it a veritable classic. Launched as a "gymnastics sandal" half a century ago, this simple single-strap model has gone on to become a firm fashion favorite. This version features a metallic glossy effect. 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: strap with an individually adjustable metal pin buckle • "Made in Germany"