The Sonora is the perfect backstrap sandal for camping, hiking, traveling, and all of your adventures. Designed with active BIRKENSTOCK fans in mind. It pairs iconic Birkenstock features including a leather upper, classic buckle closures, and suede footbed liners with direct-injection outdoor-ready outsoles for increased traction and durability. The upper is made of leather. Anatomically shaped cork-latex footbed leather upper Footbed lining: suede Sole: polyurethane (PU) Details: two straps, each with an adjustable metal pin buckle; ankle strap; two-component sole Made in Germany