This office chair is really practical. First of all, the package is not very heavy and I can easily carry it from the basement to the stairs. The installation steps are recorded in detail in the instructions. As long as you follow the instructions step by step, the installation will be completed quickly. The lumbar support of this office chair is very soft, and it is very comfortable to lean on the back. The hardness of the material is also very moderate, so you won't feel tired after sitting for a long time. The quality is also very good. Even if two people sit on it at the same time, the chair will not make any noise at all. Finally, the backrest is designed not to press against the head, and the length of the backrest is just right, making it very comfortable for your neck to lean on. All in all, it was a good buying experience.