360° anti-theft business computer bag laptop backpack with usb charging port

Specification for laptop backpack:

Material: Snowflake material  

Lining: nylon rip-stop 

Function: waterproof,anti-fricti,anti-theft

Size: 43 x 30 x 12cm

Weight: 0.8kg

Closure: zipper

Capacity: 36-55L

Style: business

Color: purple,blue,black,grey