First, my initial review of this chair was negative. I had researched the chair and others on the market for six months. I was hopeful, after communicating with Mike at Nu Chair, that it would work for me (esp since my old chair was falling apart, literally, pieces of the fake leather seat were flaking all over our home, and the arms were so wobbly, I am quite sure the screws had become stripped). When it arrived, the box was torn, part of the high riser lift was sticking out of the side, and the top was also crushed in the move. So, I felt stuck; if I could not adjust, I could not send it back (given the original box's shape). I read on Nu Chair's website to give myself two weeks to settle into the chair, which I did. The first two weeks were not good. I felt at times nauseous, and my pinched nerve, then my lower and upper back, were in a lot of pain. My husband and I considered buying a new desk since the height of my old one and the chair seemed to be causing a lot of issues, and I noted that the desk we have in our living room did not give me the same problems as the one I used during the day. We did not find a desk that would work and returned home empty-handed. I was very depressed because the chair was an investment when one factors the price. I would not be able to return it, and I had hoped to find something that would work for me, especially since I am not tall and the Nu Chairs riser feature allowed me to sit with both feet on the floor. My husband then suggested using the riser feature to raise and lower the chair depending on which desk I was sitting at. After a week of doing this, I found one day, after sitting there for a considerable amount of time, that for the first time, I did not have any pain.
Since then, I have also found when doing my aerobics that my lower back on the right side, which always hurt during one exercise, has not been giving me as much pain, and sometimes none at all. I do not know if it is the result of Nu Chair, but this has been a more than pleasant surprise. I encourage anyone who buys the chair to give it more than two weeks to adjust and to play with the features to see what works for you. I want to add that the chair is extremely well-made, and I can see it lasting for at least fifteen years.
Further, Mike at Nu Chair, who helped answer questions, was very professional and helpful and never pressured me. If I have one thing to suggest, it would be to package it better in terms of how it is put in the box and shipped. If the chair had not worked out for me, I would have had to sell it on eBay or elsewhere. Considering the shape it arrived in, I feel lucky that it was not damaged in the move. Overall, though, I am very pleased and would highly recommend it to anyone looking for a chair to alleviate back pain (especially if you need the ability to adjust the seat to accommodate your size or height).