I too have a heli ground chair..tested it out last year on a 150mile hike. used it only twice in 16 days. It was almost magical to open up and soak in the setting sun. draw backs were, no arm rests (annoying but not a deal killer for me) the killer is that the chair back doesn't have enough height to avoid the pain of waking up after 5-10 minuets of sleep with my chin resting on my chest, or tilted back. in either case, to a painful angle. on the other hand it preformed splendidly as a chair for sitting, while preparing the evenings meal. next outing I think I'll just incorporate my pack and mattress, into a chair with appropriate back height. and leave hili at home. like most any thing out there...ymmd