Specifications: Name: Computer bag Size: width 29cm height 40cm thickness 15cm Material: water-resistant oxford cloth Weight: 0.89kg Features: * Innovative expansion backpack design, for commuting to work and business needs can be met, the daily form and expansion form easily switch. *Innovative design backpack with built-in charging cable and external charging port; no need to "save" electricity for long trips! Cell phones can continue to last even when out and about. *Front zipper pocket, sandwich zipper pocket, front zipper pocket front zipper patch pocket, can put cell phones, wallets, bus cards, etc. *180 opening and closing, reasonable internal partition design, storage items such as luggage general convenient for men's travel considerations, multi-layer storage. *Reasonable partition, clothing storage area, multi-functional storage area, computer compartment for 15.6-inch laptop, A4 books, etc. *Trolley strap, convenient for travel and free your hands. Thoughtful design trolley fixing belt, easy to put the bag on the luggage, queuing waiting for the bus is very convenient. * Bionic anatomical shoulder straps design, fit the back to reduce back pressure. Back pad with honeycomb design, promote the free flow of air, keep your back constantly dry, high temperature out effectively reduce back sweat. *Anti-scratch and wear-resistant Oxford cloth, the bag is made of high-density Oxford cloth fabric, with wear-resistant and scratch-resistant features Protect the contents of the bag. * Safety reflective strip, reflective strip design in front, reflecting light at night, safe travel. Package includes: 1*Computer bag