Besides being the safest backpack it is also the most convenient backpack
Internal structure: pocket computer package
Open cover: zipper
Size: 15.6 inches 30*13*44
Note: There is no mobile power comes with the backpack inside.
If you want to use External USB Charge Function, you have to do as follows:
1.Buy a mobile power
2.Connect your mobile power with the USB interface inside the backpack
3.Connect your phone with the USB interface outside the backpack
There are 2 kinds of mobile power in the market.
1:Plug in your phone, you can start charging
2:Plug in your phone also need to press button of mobile power then start charging
To cope with this backpack, we suggest purchase of the first mobile power.
Men Backpack with USB Charging Port Casual Laptop