Birkenstock - Madrid Big Buckle - Mink Nubuck LeatherThe 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 comes with our popular Big Buckle and boasts a feminine floral print on the footbed. The upper is made from high quality nubuck leather that boasts a natural, rustic appearance. Anatomically shaped cork latex