This computer travel backpack is made of nylon, which is very waterproof, scratch-resistant and wear-resistant. Its zipper is not on the surface, which can effectively guard against theft. It can hold a 15.6-inch computer. And with a USB external charging port, you can easily play with your mobile phone without carrying and mobile power. Used for shopping, going to work, outdoor activities, tourism and other activities. Size: 11.8"Lx4.7"Wx16.9"H. In addition, if you need custom logos, please contact us.