A strap, a buckle and a contoured cork footbed are masterfully combined to create the original Birkenstock sandal - the Madrid. An iconic slide with amplified buckle accent. Shown in oiled nubuck leather. Anatomically shaped cork-latex footbed Oiled leather upper, colors may vary Footbed lining: leather Sole: EVA Details: single wide strap with large adjustable metal pin buckle “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. BIRKENSTOCK purposely does not treat surface grains and other characteristic features. BIRKENSTOCK uses sturdy leather with a thickness of 2.8 to 3.2 millimeters as upper material. Footbed material:  Cork Cork is a sustainable material extracted from the bark layer of the cork oak. This natural product is insulating and offers very good cushioning. Outsole:  EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with extremely good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned. Protect your shoes with the   Deluxe Care Kit here !