MATERIAL: This stylish laptop backpack is made of durable and high-quality water-repellent fabric; Dimensions: 20.1"x13.4"x10.2", fits up to 18.4” laptop; Weight: 3.08LBS. MULTI-FUNCTIONAL COMPARTMENT: Separated compartments and pockets provide roomy space for your computer, iPad, power bank, A4 files, wallet, cards, clothes and more your items. Elasticized Mesh external pockets on both sides can hold your umbrella and water bottle. RFID Pockets with identity protection function protects date encoded on most IDs, credit cards and passports. USB PORT DESIGN: Built-in USB PORT is convenient to charge your cell phone by the connected power bank in a safe way. (POWER BANK is not included) FUNCTIONAL & SAFETY：A well-knitted luggage strap is quite convenient for you to fix the laptop backpack on the trolley of your luggage, making your journey and travelling more convenient wherever you go. Front reflective stripes ensure your safety in evening biking, running or walking. Design of an air-flow back padding system ensures great comfort in your journey. DURABLE & COMFORTABLE：This practical backpack with a sturdy handle with steel cable on the top for carrying, side compression straps keep the exclusive backpack at whatever size you requires. This laptop backpack is large and durable, which is perfect for College, travel, business, everyday use and outdoor activities.