Birkenstock Boston Narrow Fit combines the brand's iconic anatomical cork‑latex footbed with a genuine sheepskin lining for warm, comfortable wear on cooler days. Product image is indicative. Key attributes: Mink | Suede leather | Anatomical cork-latex footbed for support | Temperature-regulating sheepskin lining | Lightweight, shock-absorbing EVA outsole | Breathable natural lining | Adjustable strap with copper-finish metal buckle | Closed toe, open heel clog shape | Ergonomic footbed shape | Velvety suede upper | Sheepskin trim around the opening | Copper-finish buckle detail | Iconic Boston silhouette | Rounded toe | Dimensions & fit: Narrow Fit | Fits true to size; choose your usual EU size | Composition & care: Upper: suede leather | Lining and footbed cover: natural sheepskin | Footbed: cork and latex | Outsole: EVA | Avoid immersion in water. Brush suede with a soft suede brush to remove dust and restore the nap. Let sheepskin air dry away from direct heat and brush gently if needed. Clean the EVA outsole with a damp sponge and mild soapy water.