This chair is well worth the money! I absolutely love it! I have degenerative disc disease in my lumbar region between my L5 and S1. I received this chair today, put it together, and have been sitting in it for two hours already with no pain. It takes a bit to get used to how the chair moves with you as you move but once you adjust to it you have no problems. I HIGHLY recommend this product. The assembly was quick (less than 20 minutes) the parts were clearly labeled down to even the screws being labeled. Anyone can put this chair together. You will see a picture of the old $40 dollar chair I was using vs. the back in motion chair. These two are not even on the same planet in terms of comfort and support. Again I highly recommend this product! Buy it and thank me later.