Sowaovut Laptop Backpack 15.6Inch Casual Daypack WaterResistant Travel Backpack

WELL MADE BACKPACK: This fashion backpack made of eco-friendly and waterproof polyester fabric, with durable and classic metal zippers. Comfy and fashionable. USB PORT DESIGN: With built in USB charger outside and built in charging cable inside,this usb backpack offers you a more convenient way to charge your phone while walking. Please noted that this backpack doesn't power itself, usb charging port only offers an easy access to charge (POWER BANK IS NOT INCLUDED).