I was originally looking for a massage chair, but it seems those  have been discontinued.  Trying to find something similar led me to chairs that did massage and give heat, but were priced way above my budget.  I really didn't care whether there was massage or heat; I just wanted the zero-gravity aspect of the chair.  This product fit the bill perfectly and at a very low price.  It folds for easy storage and, although lightweight to carry, is sturdy enough for my 6-foot tall frame.  It can be used inside or outdoors.  It is extremely comfortable and even has a lock mechanism under the armrests to set the chair in any position you choose.