25L Large Capacity Backpack

This 25L Large Capacity Backpack with 2 USB ports, so you can put your power bank into the backpack, connect the data line. And you can charge your phone just connect with the USB port. You can free one hand when you need power bank to charge your phone. With a large back pocket, you can keep your laptop, tablet, etc inside. Your LOGO or artwork can be imprinted on it.