Having back/lumbar issues and now working remotely from home regularly; needed a more therapeutic model. Although I thought a bit pricey (most other brands were on 'sale' at the time so I figure this one must be popular). But other more therapeutic models cost even more. Only one minor issue; could not adjust headrest vertically only the rotating adjustment worked. Simply loosened the mounting screws and used a filler item for the gap for a good fit. Otherwise it's been great.
This chair has corrected my posture. I always found myself leaning over the keyboard in my last chair and would have a sore neck and back. I would recommend this chair. The extra height extension is great to lay your head back to rest but does not provide support while actively typing. It tilts a little bit does not have any other adjustments. It lays too far back to be of any use. I do enjoy having it there when you just want to relax for a moment. It took about 20 minutes to assemble.