Reasonable dimensions: 31x18x47cm, 1.3kg. Made of high-quality waterproof nylon, this backpack is made of soft, durable, and comfortable fabric and can accommodate 17.3-inch laptop backpacks. Impeccable structure: 5 large compartments up to 35-40 liters and a total of 2 side pockets. The 2 main compartments can hold clothes, books, etc. The back pocket: the internal compartment for placing a laptop, a tablet. The 2 outer pockets can hold everyday items such as cards, pens, phones, watches, perfumes, and other accessories. Place an umbrella or a water bottle in the 2 side pockets. USB port: There is a USB port for you. An extended USB port, an external charger, and a built-in charging cable, this allows you to place the external charger in the bag to connect your electronic equipment when walking, or use the smartphone. Please note that this backpack does not charge automatically. Multifunctionality and elegance: This laptop backpack is waterproof, breathable, wear-resistant, lightning-resistant, shockproof. Its comfortable and durable handle can relieve pressure on the hand. The well-designed luggage belt provides an exceptional experience for travel. The smooth zipper, durable materials, and adjustable shoulder strap buckles to adjust the length of the bag, all this gives you a great experience. Convenient and comfortable use: This unique backpack is ideal for everyday use, such as at school, at work, for travel, hiking, and camping. It is suitable for both women and men.