I just retired (your welcome) and have been dragging my 12 pound bag around for 20 or so years it is rugged and takes a beating.
Current equivalent version looks like a stealth roller.
I will give my bag to a new hire, it needs two zippers so it will cost $ to get up and running but its yours for the asking, contact me off line with your FedEx shipping number and address.
[email protected]
Sparky