Once in it, it is extremely comfortable. The chair conforms to the contours of your spine giving support to the low back and neck regions. Great for reading, TV, relaxation, therapy, meditation. Small, medium, large, and X- large.
Size is determined by height.
The Aerial Chair comes with a screw hook that can be placed in your ceiling, truss joint or beam on the deck overhang. Just throw a rope over a tree branch or sailboat halyard line and hook the end to the single support ring. Original Chair weighs 3lbs. I have made tripods with small dead trees out camping to be right next to the fire. It is not in the right configuration for hang gliding and probably will not pull 10 G's.