It is a sturdy enough kart, well constructed and quality materials, My criticisims are as follows:
It is not well suited for sandy areas as the wheels are small and narrow. Also, I would have liked some small sack/bag included for storage of the disassembled cart on the kayak.
I find it a little too narrow for my kayak, which is a cobra fish'n dive sit on top.(36" max width)
My kayak doesn't have a lip in the center to connect to the harness hook and I have to connect if off center on a grommet.
I've owned this cart just a week so far, but I'm already impressed. It's exactly as advertised--simple and useful. It's exactly what I needed to move canoes singlehandedly between a storage shed and the water. It doesn't slip off the canoe as the last cart did, and it does fold up to a convenient size and shape. I'm a small person, and I was able to move 15-foot canoes with no trouble.