On Dialysis and have boxes to move around the house making room for more. Boxes are about 25 lbs. I am nearly 80 years old and can move 4 or 5 at a time. But only three up stairs. Not as young as I use to be. Very please with my purchase.
It would be nice if tires were a little larger. Really tight at first before broken in. I love this tool as it can with stand a load. I haul cases of drinks, 4 cases at a time and it’s better than a huge dolly.
Moved a 260 pound gun safe up three steps into the house by myself. Pretty surprised how easy they went up the steps. Muscles were still sore the next day though.
It is a strong cart. You could pull up very heavy stuff with it. I would say it depends on your body strength. I tried 450lb of heavy package up to third stairs without problem. Nice build. Highly recommend!