Like many people, I also have problems with his back. Specifically, a slight scoliosis. I'm currently studying and sitting partially up to 5h on deise chair. After I had for years always very cheap desk chairs, I have now bought this chair. The seat comfort is better by far. The chair has an adjustable lumbar support, but that could still be somewhat higher. I'm about 181m high, so for comparison, and have the support always in the top position. Unfortunately, she moves back automatically down when you move. (1 star deduction) What is very good, is the joint with which the backrest is attached to the chair. It tends and rotates with every little movement, so the rest is always applied optimally on the back. The headrest can be adjusted in height and the angle of inclination, but not in depth. I find that the headrest is too far forward, so I can not go far enough Bending Over Backwards me. (2 star deduction) The headrest I have, however, itself adapted. One must also see that such chairs with so many features it may be considerably in the thousands when it comes to the purchase price. Therefore, one can also not expect perfect, ergonomic chair. Despite these weaknesses, I am satisfied with the chair and would like to mention the high quality workmanship. All non-mobile connections are also found, making the stool not additionally unstable. The tilting mechanism is very sturdy. You have to buy rolls with large diameters for this chair not necessarily. This is more a matter of appearance. I have under my chair the laminate rolls of Ikea. Beware just because the recording is standardized for the bolt in the chair and not even cost half.
