Review (5/5): Great for a long period of time.
This is the most comfortable and ergonomic desk chair I've ever used. What I like about this office chair is that it is cheap compared to others of the same model, simple to assemble, I managed to assemble it in 15 minutes; it comfortably supports my entire back, glutes and lower back, when I'm at the computer for hours, the option to lower the chair arms to a comfortable height comfortably supports my arms. I also like the option to raise the arms on the chair and it fits best under my desk with the arms up due to the small space my desk sits in. Mobile lumbar support is an added bonus.
It's one of the most comfortable office chairs I've ever sat in. I recommend this chair to anyone who needs to sit for a long period of time.