Birkenstock Boston Oiled Leather Narrow Fit combines a supple oiled leather upper with the brand’s contoured cork-latex footbed for reliable, all-day support. Product image is indicative. Key attributes: Black | Oiled leather | Contoured cork-latex footbed for support | Lightweight, flexible EVA outsole | Adjustable metal pin buckle | Suede footbed lining | Anatomical contoured footbed | Closed-toe clog silhouette | Single adjustable strap | Seamless oiled leather finish | Dimensions & fit: Narrow Fit | Composition & care: Upper: Oiled leather | Insole: Natural leather (suede lining) | Footbed: Cork-latex | Outsole: EVA