I have a number of these short backpacks in grade 2 condition.
All straps, buckles and zips are present but there will be a minor issue that stops me from selling them as grade 1.
Reason why we have made these grade 2 is typically things like fading, scuffs, small tears usually in front pocket, tabs missing off a zip, dirty and needing cleaning, cracked buckles.
I will add pics to show typical faults.