The construction and materials exceeded expectation. The headrest support actually works and adjusts as needed especially when reclined. Lumbar support is better than Herman Miller's since there is more range to tune for optimal comfort/location. This chair easily comparable to competitors at 2x to 3x the price. Buy it you won't regret it.
Got this chair and loved every minute of use - comfortable and very well ventilated. I had a solid back and base chair for many years and now will never go back - Ventilated chair is the only way to go.