Features 1. Specification: The size is 50cm * 32cm * 16cm. It has many pockets and can be easily carried around during flight. Opening the main area allows for more pockets, which are very deep and can also be opened 180 degrees to store clothes in rolls. The computer compartment is the last zippered storage area. 2. Unique Function: External USB port, which can charge the phone when carrying, making it convenient to carry. How many backpacks offer shoulder/chest straps with whistles? It has this function, which gives you a safer feeling when walking, carrying other items, running, or taking public transportation. There is a small zipper pocket on the left shoulder strap. Perfect for fast cash, credit cards, ID cards, or storing earplugs. 3. Appearance: The design of the backpack is both fashionable and professional. The excellent building material is PU material, which is smooth, easy to clean, but not sticky or shiny, waterproof and wear-resistant. 4. Practicality: It has enough space to store files, shoes, and a set of sportswear. It's also a great commuting backpack, and if you carry a lot of technology/wires/adapters with you, it's really useful. There is also a "cross strap" on the back of the backpack that can be worn on your standard carry on luggage for easy scrolling at the airport. Perfect for professional use and weekend travel 5. Waterproofness: Conceptual vehicle streamline design, integrating speed streamline design with the future, giving the package an outstanding appearance. Anti splashing, soft and waterproof zipper, greatly enhancing the water release performance. Specification Material: Oxford Cloth Color: Black, Green Size: 50 x 32 x 16 cm Weight: 1250 g Package Include: 1x Business Backpack For Men