For now I will give it 4 stars.I haven't used it yet but in assembling it I can tell that extra bracing will most likely have to be added to the wheel frames to keep them from folding up.Im not a very heavy guy and my concrete driveway is somewhat smooth so it may not be an issue.Pictured are the troubled areas on all 4 wheels, where the bend is.Welding a brace across the the 2 on both ends would be a great improvement.The cushion seems to be comfortable.Will update in a few days.