Birkenstock Boston Big Buckle Shearling combines a shearling-lined footbed with an adjustable buckle for warm, comfortable wear. Product image is indicative. Key attributes: Beige | Shearling | Temperature-regulating shearling | Anatomical cork footbed for support | Lightweight EVA outsole for cushioning | Adjustable buckle strap | Shearling lining | Contoured cork-latex footbed | Mule silhouette | Single strap with large buckle | Rounded toe | Rivet logo detail | Composition & care: Upper: Shearling | Insole: Shearling | Footbed: Cork | Outsole: EVA