The Birenstock Milano is the classic backstrap sandal. This version pairs iconic Birenstock features including oiled leather uppers, buckle closures and suede footbed liners with direct-injection outdoor-ready outsoles for increased traction and durability. Features:. Anatomically shaped cork-latex footbed. Oiled leather upper, colours may vary. Footbed lining: Suede. Sole: PU. • Details: Two straps, each with an individually adjustable metal pin buckle; ankle strap. Made in Germany. Material:. Upper material: Oiled leather: Oiled leather is one of our favourite types of leather. Its oily waxed surface makes for a unique colour effect and develops a beautiful patina. The oily finish of our natural leather products results in colour variation, making each and every pair unique. Insole: Natural leather: Natural leather can be recognized by its untreated surface. Birenstock purposely does not treat surface grains and other characteristic features. Colour: black