USB computer backpack

Material Oxford cloth
With or without rain cover
Function: Breathable, waterproof, wear-resistant, anti-theft, anti-vibration, capacity expansion, load reduction
Lining texture polyester
Accessories type Backpack shoulder pads
Strap root number: double root
Carrying parts telescopic handle
Color Laser red USB charging, black and white USB charging, camouflage USB charging, starry USB charging, laser blue charging version