Adopting high strength 1000D Tasllon, dealt with waterproof and flame retardant treatment.  

Nylon thread stitching, very strong and durable. 
This backpack is designed with molle system can carry extra equipment. Pouches of various size make it easier to put tools in sorts. 
Inside the backpack can be put a laptop.
there is a small hidden pocket on the back of the side that closes with magnets and a simple holster. The backpack straps have quick release buckles.

Size - H 17.72"x L 10.35"x D 12.40"