Generally a good mess chair. Setup instruction were amazingly accurate and easy. Chair comfortable with the exception of the head rest which is a bit short for my 6'2" frame. Used shims to angle the head rest back and out of the way.
We bought this chair after trying it in the store. It fits perfectly where we needed it and it's comfortable to use though with minimal adjustments. We took off the headrest since it leaned too far forward and there was no adjustment available (you can adjust the tilt but not the position).
This is the best desk chair I have ever owned. Very comfortable especially the lumbar support. I really like having the option of the head rest. Easy to assemble. Highly recommend.
I replaced my ergo office chair of 15+ years with this unit. I am an able-bodied 50 year old male 6'1" 190 lbs. After two weeks of daily use this piece does what it is designed to do.