Not difficult to put together, uses pictures instead of words, and apart from the fact there are two different sizes of screws and not a lot of direction as to which ones go where, the pictures were easy to follow. Like the adjustable lumbar support. I can increase or decrease according to how my back is feeling. Like the 3 levers, although once I set them, I haven't changed them. Thought the back would be higher. It's not as high as other executive high back chairs, and would not be high enough for anyone more than 5'8" tall. Other than that, I've sat in it for a week now, and not had any problems. The levers are not easy to reach and I had to have my husband operate the levers while I made the adjustments.