Great chair, have to give it 5 stars. My chair had a crack on the under side upon arrival but it has zero affect and can't be seen. The chair for the price is just too good to give anything less than 5 stars. I sat in a $3,000 ergonomic chair for 5 years at a corporate job and it was great. Now that I'm self employed the office chairs, fitness ball, etc just weren't cutting it. I chose this chair because of the mesh seat and back rest. It is a must for anyone that has a bad back like mine. The padding will never wear out. The depth between the mesh and the frame is deep whereas other chairs I've seen are shallow and before long you are sitting on the plastic. The adjustment ability is adequate. Love the chair and my back is happy. It's not like sitting on a sofa or anything like that but the back feels good and that is what is important. The one knock I would give is that the armrests are rock hard and can hurt my bony elbows, but again for the price I just can't ding the rating for that.