This bag is made of durable PU leather, which is light and durable. Equipped with adjustable shoulder straps and a soft shoulder pad design, it can reduce the pressure on the shoulders of the pack, making it easier to carry items for a long time. Ergonomically designed, padded adjustable shoulder straps and back ensure ultimate comfort It fits easily into your laptop, pens and notebooks, water bottle, shoes and clothes. A bag of this size offers more space than you might expect. It is your perfect assistant. The Teen Student Backpack is made of soft and silky fabric that's easy to wipe down, and the waterproof material protects your laptop and laptop from the rain. You decide how to use it, hiking, walking, climbing, camping, cycling, fishing and fitness. It is your perfect assistant USB Port Design: External built-in USB charger, built-in built-in charging cable, this USB backpack provides you a more convenient way to charge your phone while walking. Note that this backpack does not include the power bank itself. USB charging port provides easy charging only COMFORTABLE/DURABLE: This backpack is made of waterproof and durable Oxford cloth with metal zippers. Comfortable, wide, breathable mesh shoulder straps and rich foam padding help relieve shoulder pressure. These can be used as men's school bags and women's computer backpacks. It is an ideal gift for men, women or graduation gifts