Useful but not life-changing
I live on the third floor of a walkup building, so was anxious to try out my Upcart. I had a full load of groceries that didn't exceed the 77-pound weight limit, and found it a bit challenging to pull upstairs. I'm a smaller woman, age 59, and had to keep pushing myself forward since the weight of the cart was trying to pull me backward. It's not the cart's fault, just simple physics I think, but just realize that the weight of your load will still be the same regardless of how you carry it. I almost pitched backwards a couple of times on my way up. So I will use it for lighter loads in future. It would be ideal for cumbersome loads that weren't too heavy, like large boxes, etc.