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 favourite. 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 Upper material: Birko-Flor® Insole: Natural leather Footbed material: Cork Outsole: EVA 40793