Are zero-gravity chairs comfortable for long periods on a patio?

Across the reviewers we read, zero-gravity recliners are repeatedly described as the most relaxing option for extended lounging, with several community members on r/BuyItForLife and r/camping saying the full recline mimics floating. The trade-offs reviewers cite are weight and bulk: they fold but are heavy and a little awkward to open solo, and pillows tend not to stay in place. If you mostly want to read or relax flat, they score well; if you want an upright dining posture, a swivel or stack chair fits better.