【Large Capacity】The external dimensions of the laptop backpack are 46 * 31 * 18 cm (18.1 * 12.2 * 7.1 inches), suitable for computers up to 17 inches, as well as 15.6 inches, 15 inches, 14 inches, and 13 inches. The weight is approximately 1.14 kg. There are 3 main compartments and 9 small pockets for laptops, iPads, clothes, books, binders, A4 files, pens, wallets, keys, umbrellas, water bottles, and other daily necessities. Keep everything organized and easy to find. 【Excellent Quality and Water-Repellent Surface】Made of waterproof, durable, scratch-resistant, and breathable Oxford jacquard fabric. The fabric texture is soft and delicate, high-end fashion, and the fabric has automatic elasticity, which is not easy to wrinkle. With the latest high-quality waterproof and explosion-proof two-way zipper, you can protect your luggage even if it suddenly rains. Smooth zippers and reinforced stitching for added durability. 【USB Port and Headphone Jack】This men's backpack features an external USB charging port, a headphone jack, and an internal charging cable. To charge your mobile phone, iPad, or other devices, simply connect the USB port to the internal power bank (power bank not included) in this 17-inch laptop backpack. The headphone jack for listening to music is designed to help you relax on the go. 【Multifunctional, Security, Anti-theft】There are hidden anti-theft pockets on the back of the laptop backpack that can safely and easily protect passports, wallets, phones, and other valuables. The front and side pockets of the backpack have reflective straps to ensure safety when going out at night. The laptop compartment has a non-slip elastic band to secure the laptop. You can also place the backpack on top of a suitcase to save effort. 【Comfortable and Breathable】Ergonomic design, adjustable S-shaped wide shoulder strap, and soft but sturdy handle ensure long-term comfortable use. The shoulder straps and back are made with breathable 3D mesh sponge that quickly absorbs and distributes moisture and sweat, relieving stress on your shoulders and keeping you cool for a long time. Ideal for school, university, work, business, leisure, travel, weekend trips, camping, shopping, etc. Enjoy a one-year worry-free warranty.