MARGARET HOWELL ショルダーバッグ

The number you provided, 4549542698819, appears to be a barcode or product code, which likely corresponds to a specific item from the Margaret Howell brand. Margaret Howell is known for its minimalist, timeless designs in clothing and accessories, including bags like shoulder bags.
If you're looking for more information on a specific shoulder bag from the Margaret Howell collection, such as its style, features, or where to purchase it, I recommend checking the official Margaret Howell website or authorized retailers. You could also try searching for the product code in online marketplaces or fashion retail websites for availability and details.