Birkenstock Boston Big Buckle Narrow Fit pairs the brand's contoured cork-latex footbed with a velvet upper and oversized buckle for refined everyday comfort. Product image is indicative. Key attributes: Black | Velvet | Anatomical cork-latex footbed | EVA outsole | Adjustable pin-buckle strap | Slip-on design | Velvet upper | Oversized metal buckle | Rivets and piping | Round toe | Dimensions & fit: Narrow fit | Composition & care: Upper: velvet | Footbed: cork and latex with leather lining | Outsole: EVA | Wipe clean with a damp cloth. Do not machine wash.