Great with a few little Buts...It requires too much strength to tilt the chair back the seat along does not allow to lift at the knee preventing sliding forward as you sit the overall height that the chair lifts is about 1 inch shy I still need to sit on a pillow I was looking for a little more lumbar support. Bottom Line: I can do all these things in the drivers seat of my car I hoped that was available in all support type chairs. It is the best that is available. My choice might have been different had I been able to shop line-person like 2019. That is why 4 ****