Product reviewed: Amazon Basics Zero Gravity Lounge Chair
I am about 6 feet, and the zero gravity chair fit me perfectly. For really tall people, I suspect it would not be nearly as comfortable.
The product has a head rest, that simply slides up and down.
There are 2 knobs (1 on each side) to lock-in the mechanism, so that it doesn’t move as easily.
There is no set up required.