Large CapacityThe external dimensions of the laptop backpack are 48 * 32 * 16 cm (18.9"12.6" 6.3"), applicable for computers up to 17 inches as well as 15 ,6 inch, 14 inch and 13 inch. men's backpack has various practical compartments and pockets. It can provide spacious space for your laptop (fits up to 17"), iPad, pens, books, purse, tablet, power, etc. Keep your items organized and easy to find.Breathable and waterproof materialThe laptop backpack is made of high-density waterproof, abrasion-resistant, scratch-resistant, breathable Oxford cloth with nylon, which has good waterproof performance, protects your belongings from splash water and rain, is perfect for business trips, weekend trips, shopping, professional office work and other outdoor activities.USB -PORT DESIGNWith external USB charging port and internal charging cable, this laptop bag with USB port provides easy access to charge your phone while carrying a computer backpack on the road. (POWER BANK not included)Light and breathableThe weight is about 0.85 kg, which is light and slim, which makes it very suitable for long time wearing. Ergonomic design, adjustable S-shaped shoulder strapStereoscopic breathable and pressure-reducing back, thick and soft, easy to carry and good heat dissipation performance. Ideal for work, business, leisure, travel, weekend vacation, camping, shopping, etc.Multi-function, security, anti-theft There are anti-theft bags hidden on the back of the laptop bag, which can protect passports, wallets, phones and other valuables safely and conveniently. A LUGGAGE STRAP makes the backpack fit on the luggage/suitcase, slide over the upright handle tube of the luggage for easier carrying.Quality AssuranceOur products have passed double QA quality inspection, please buy, if you have any questions, you are welcome. to contact us, we will solve your problems within 24 hours