Carhartt Classic 21L Laptop Backpack. Big enough to carry your day’s essentials, strong enough to take on anything. Made from 600-denier polyester with Rain Defender durable water repellent. The pack features a large main compartment with a dedicated 15-inch laptop sleeve. It also includes one exterior side pocket, a front zippered organization compartment, and comfort shoulder straps. Dimensions: 12” X 17.5” X 8.75”. Volume: 21L. This product is intended for persons 13 years of age and older.