I bought this chair for my assistant editor who works with me in a small space. It was really fantastic to get a chair that is comfortable but can fit in a small space. This is a big advantage, as other chairs I have bought tend to be bigger / heavier than expected when they arrive. I also live up four flights of stairs, so I was very grateful that the weight of this chair is manageable. Overall the design is simple but effective. The air rests can be lifted up and tucked with the back of the chair, but otherwise there are no adjustments to adjust the height or angle of the arm-rests. The bottom cushion for sitting is comfortable for a long time and does not sink much, which tells me that this chair will probably last for a while. The back support is like a hammock, it's pretty firm at first but with use will stretch and become more comfortable. There is also a plastic catch behind the back that allows support for heavier weights. There is a control on the bottom for the height of the chair, it goes up and down probably 3-4 inches.The only real change I would love to see in future models of this chair would be adjustable height to the arm rests. For me personally they are a bit too low, but they're still better than the alternative of no arm-rests.This is a great option for a fast fix to needing a comfortable chair in a small environment. So far I haven't had any issues with it.P.S. - my cats scratch up all my office chairs, but they don't scratch this one. Extra plus!