Birkenstock Boston Narrow Fit mules in suede, designed for everyday comfort with a grippy lug rubber sole. Product image is indicative. Key attributes: Black | Noir | Suede leather | Grippy rubber sole | Durable outsole | Adjustable buckle strap | Closed-toe mule silhouette | Single strap with buckle | Lugged outsole | Dimensions & fit: Narrow fit | Composition & care: Suede leather upper | Rubber sole | Wipe clean with a damp cloth. Use a suede brush to restore the nap. Avoid prolonged exposure to moisture.