Fabric: Nylon Lining: Polyester Size: 40cm*30cm*11cm Weight: 0.42KG Structure: Front bag *2/ main bag/side bag *2 Purpose: Leisure/business trip/play/shopping 1.Convenient USB Port Design: Built-in USB port design and built-in a charging cable inside offers you conveniently to charge cell phone and other electronic devices by connecting power bank. Please noted that lightweight backpack doesn't include the power bank itself, USB charging port only offers an easy access to charge. 2.Comfortable Material: backpack is made of environment-friendly tear-resistant nylon and polyester with sturdy metal zippers. Adjustable shoulder straps comes with comfortable and breathable mesh design can help you release the stress of shoulder. 3. Large Capacity: This backpack purse fits up to 15.6 Inches laptop, iPad, books, clothes, phone, umbrella, pens, wallet and so on, it is great for office work, campus class, weekend getaways, business traveling and other daily outdoor activities. 4.Multi Pockets: The travel backpack has one separate laptop compartment hold 15.6 inch laptop and an ipad compartmentOne spacious packing compartment roomy for daily necessities,tech electronics accessoriesFront compartment with 2 zipper pockets and water bottle pockets on the side, all the pockets make your items organized and easier to be found. 5. Gift: This laptop backpack can be a great companion for college, travel, business, everyday use and outdoor activities. Practical gifts for friends, mother, father, her or him.