Birkenstock Boston BS mules in gray suede pair a closed-front silhouette with the brand's contoured cork footbed for reliable all-day comfort. Product image is indicative Key attributes: Gray | Suede | Contoured cork-latex footbed | Lightweight EVA outsole | Excellent grip | Adjustable strap with metal buckle | Open back mule | Anatomically shaped footbed | Rounded toe | Closed front | Subtle embossed branding | Textured suede upper | Dimensions & fit: Sole height: 3.5 cm | Composition & care: Upper: Suede | Insole: Natural leather | Footbed: Cork | Outsole: EVA