I do some limited shopping on line. I saw a chair that I liked and bought it. When it was received, I checked all the parts and it seemed to be fine. After it was assembled, the lever to raise and lower the seat was frozen UP;. I fussed with it for a week. to no avail. Called the office and
reported the problem. It was solved in few seconds. This is a very reliable company of course they deserve a 5 star rating. They deserve it.