Four carrying styles: you can use it as a backpack, shoulder bag, messenger bag, handbag, backpack. When you use messenger bags and shoulder bags, the shoulder straps can also be hidden. Reasons for choosing this package: One package pays four packages! The lightweight design is easy to carry. The ergonomic design ensures that the gravity of the filled bag is dispersed.Size information: The size of this spacious messenger bag is 44cm*32cm*13cm (suitable for 16-inch laptops); the spacious space can accommodate laptops, books and clothes. Weight: 3 pounds. Adjustable shoulder strap: 24.1-46.4 inches. You can carry it as a shoulder bag, messenger bag and backpack. There is more space for you to store 2-3 days of summer clothes. It is an ideal design for travel, business trip, school or work.Excellent design: Mens laptop bag has multiple insert pockets and outer pockets, which are convenient to organize the items you want to carry, and forget the pain points of finding things everywhere! The specially designed laptop compartment of the messenger bag has a retractable strap to provide more protection for your laptop.Durable materials: The messenger bag is made of canvas, and has been updated with buckles, metal fasteners and zippers to ensure long-lasting performance.Load capacity: The zipper of the shoulder bag can withstand 1000 times of tensile test without worrying about the zipper breaking; the heavy hardware of the messenger bag and the stitching hand-made by skilled craftsmen ensure the large capacity load capacity of the bag.