The SKB cases are about 2.5-3kg. Which is really light considering what it can withstand.
I have one that is 6 years old, been travelled with, thrown into trucks, SUVs , smashed on the ground and all its got are scratches.
It is a bass case and its still serving me well.
I have 3 other SKB cases for guitars.
They are much lighter than the fender deluxe hardcases, but offer equal or much better protection. The only drawback, no flap for the pockets. But no problem cause once the top closes its secure.