Besides the expected adjustments and features I have to say that this chair has greatly improved my posture and comfort. The back has great lumbar support and the sliding lumbar control adds even more customization to it. I am a relatively big guy and I find it comfortable to sit on for at least 2-3hrs straight before I need a break (pretty normal).
Easy to assemble and made with exceptional quality. Very sturdy and comfortable. I love the range of adjustments for my arms and chair height as well as having the ability to tilt!! I highly recommend this chair!!!