Polypropylene and Polycarbonate are the main materials of hard shell box. Polypropylene has lower thermal distortion temperature (100C), low transparency, low gloss and low rigidity, but it has stronger impact strength; Polypropylene has excellent electrical insulation, extensibility, dimensional stability and chemical corrosion resistance, high strength, heat resistance and cold resistance; Polypropylene also has self-extinguishing. Flame retardant, non-toxic, colorable and other advantages.
|Name：||Hard shell backpack|
This bag is made up of a combination of a hard-shell case and a fabric to transport and protect important items.
The back of the shoulder strap conforms to the ergonomic design, which reduce the tiredness of long journeys.
Use zipper opening to better handle items loading and unloading