New without tags or box 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 an oiled 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 especially thick, oiled nubuck eather. Upper Material: Made from especially thick, oiled nubuck leather. Footbed: The signature anatomically shaped cork-latex footbed is lined with suede for comfort and support. Sole: A two-component polyurethane (PU) sole offers flexibility, lightness, and good cushioning. Straps: The design features two adjustable straps across the foot and an adjustable ankle (back) strap, each with a metal pin buckle, to ensure a secure fit.