Birkenstock Sierra Color : Black Size : EU 40 / US 9-9.5 Women / US 7-7.5 Mens Width : Medium/Narrow Upper: Oiled Leather Insole: Suede Footbed material: Cork Sole: polyurethane (PU) Details: two straps, each with an adjustable metal pin buckle; two-component sole Made in Germany Like new! Tried on and walked a loop inside the house before I realized it was the Medium/Narrow version. Does not include original box. The Sierra is the perfect two-strap sandal for camping, hiking, travel, and all of your adventures. Designed with active BIRKENSTOCK fans in mind. This version pairs iconic Birkenstock features including nubuck leather uppers, classic adjustable 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 leather.