I am hard to please with chairs so take this with a grain of salt. The lumbar support felt like it was hitting me in the kidneys after a while and didn't give good lower lumbar support. The top edge of the chair was very hard on my shoulders if I wanted to stretch my arms up or clasp my hands behind my head. Those were my biggest problems.
The chair is wonderful! super comfortable - the only down fall was that I ordered it in Black and it came in Red. I didn't want to take the extra time to wrap it all back up and send it back so I just kept the red one.
I got the chair because I was having a lot of tech neck symptoms. This chair especially the adjustable arms and the lumbar support has provided instant relief. The one drawback is the neck support. It adjusts forward and backwards but not up and down so it doesn't fit me that well but a minor drawback.
The seat and back are a mesh so that you won't get overheated the back tilts and the head rest adjusts (only very minimally) and the lumbar support is great! Nice chair for the home office...we bought two.