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.
Chair is very comfortable and not very expensive. Cushion is nice and bouncy and the back has good lumbar support. Neck support is a good idea but it doesn't come forward far enough to support your head unless you are leaning back.