【High-capacity】: Size: 17.7*11.8*5.9inch, Laptop backpack has 8 bags totally, the main layer can put 15.6 inch laptop, 9.7 inch iPad, as well as 15 inch,14 inch and 13 inch Macbook/laptop; the huge capacity layer can be placed books, documents and large items. The front pocket can be placed small items, such as notepad, pen, bank cards and so on. The side pockets can put water bottles or paper handkerchief. 【Personality Design】: Reflective Material, the front of the bag will be reflected at night if it encounters light. Anti-theft Zipped Pockets, the back hidden zipped pocket for your wallet, phone, passport and other objects. Waterproof seamless zipper, stylish and beautiful. 【Detachable USB Charger Cable】: External USB port with charging cable is convenient for you to charge your smart phone, tablet and other electronic devices. There is a built-in pocket to put the power bank. For cleaning backpack, remove the built-in cable. 【Occasion】: Reflective material design, you can ride at night without worrying about the vehicle behind. You can carry it in working, travel, school, business conference etc. 【Material】: Nylon and Reflective Material, more safer at night and durable.