This is the most uncomfortable office chair I have every had and I have had a lot of them. The material is scratchy, I scratch my arm on the arms of the chair and the piece of plastic you call a lumbar support does nothing. The only thing nice about it is that it is easy to move up and down and it goes down to 16 inches from the floor. If my son hadn't thrown the box out after putting it together for me, I would be sending it back. Now I guess I own a chair I will put in the bedroom and pile stuff on. So upset about this and the loss of money which is from a very tight budget.