HIGH QUALITY MATERIAL: The laptop backpack is made of water-repellent and durable nylon fabric, ensuring a secure and long usage everyday. External Dimensions: 16.6"x12.5"x7.5". Item Weight: 1.78LBS. MULTI-FUNCTIONAL COMPARTMENT: Larger roomy compartments can provide separated space for computer, iPad, A4 files, wallet, clothes, power bank and more your items. Zippered front pocket can hold some small but commonly used items. Organizer dimensions fits up to 15.6 inch laptop. EXTERNAL USB DESIGN: Built-in USB PORT is convenient to charge your electronic device by the connected power bank (POWER BANK IS NOT INCLUDED).