Dimension: 18.1"x12.2"x6.7"inch (LengthxHeight xThickness). Weight: around 1.34 lb. Fabric: oxford. Lining: polyester. Closure type: zipper. Inner Structure:15.6" Laptop pocket with hook and loop, and a zipper closure pocket. There are two buckles on the main pocket that make straps are adjustable to fix things and prevent things shaking in pocket. One frontal pocket is convenient to put something inside, for example napkin, notebook. And the other small frontal pocket is convenient to put napkin, small notebook and so on. The external dual side pockets are convenient to bring water bottles and umbrella. There are two buckles on the side pockets that make straps are adjustable to fix bottles and umbrella. Cell phone charger hole on lateral side, you can put the power bank in backpack and charge cell phone outside. All connections are sewed with thick stranded thread that makes backpack durable. Straps are adjustable and there are sponge in straps that are comfortable and ergonomic. Ensure a secure and long usage everyday & weekend.Serve purpose as professional work bacpack at office,slim fashion bagpack with usb port,college bookbag, high school big student book bag for boys,girls,teens,travel personal carryon for adults.