The BIRKENSTOCK Madrid flat sandals are a must-have addition to any female wardrobe. The classic and versatile cognac color adds a touch of elegance to the design. The Big Buckle version features a large, eye-catching metal pin buckle that is sure to attract attention. The upper is made from extra thick, oiled nubuck leather with an open-selvage finish, while the soft smooth leather lining matches the shoes color. These sandals can be easily adjusted to fit perfectly, thanks to the anatomically shaped cork-latex insole and one adjustable strap. With a normal, standard width, they offer a comfortable fit. Product Style ID: 1006524. Fabric details: Oiled nubuck leather upper, Nappa leather insole, Cork footbed, EVA outsole.