I loved the look of this chair but ended up returning it and replacing it with an ergonomic one.  

PROS:
Sleek, minimalist design.  
Super easy to assemble.  

CONS:
No lumbar support.
Poorly cushioned.
Limited adjustments.

I work from home - anywhere from 8 to 10 hours per day - and have back issues.  Back combo for this style of chair.