Really is comfortable and seems to perform well. Lumbar support is important to me and this one provides pretty good support. Only two things I'd do to improve this chair is to make the lumbar support adjustable and allow the seat to adjust lower in height.
This chair is so much better than my previous desk chair. It supports my back and helps me sit straighter while I work. If I want to lean back and relax the headrest is comfortable. I wish I'd bought it sooner.