QUALITY MATERIAL: This stylish laptop backpack is made of durable and high-quality water-repellent ballistic fabric; Dimensions: 21.25x 15.7x 9.8, fits up to 18.4 laptop; Weight: 3.08LBS MULTI-COMPARTMENT: Our large travel backpack with separated compartments and pockets which can provide roomy space for your computer, iPad, power bank, A4 files, wallet, cards, clothes and more your items. Functional front pocket with waterproof zipper. Side zippered pockets and mesh pockets can hold your umbrella, water bottle, small accessories etc. A hard shell zone is designed on the top which is convenient and safe for you to put your sunglass, cell phone etc USB PORT DESIGN:Built-in USB PORT is convenient to charge your cell phone in a safe way (POWER BANK is NOT included) FUNCTIONAL & SAFETYA well-knitted luggage strap is quite convenient for you to fix the backpack on the trolley of your luggage, making your journey and travelling more convenient wherever you go. Design o