This chair works well for me but because of the limited adjustment on the head-rest I can't imagine how anyone taller than 5'10" can sit comfortably on this chair. One of the best features is that the seat AND the backrest are made of a mesh material so it breathes well no sweat!
Assembly of the chair was very easy and the chair itself is very comfortable. The headrest however is not sufficiently adjustable to accommodate my wife's short stature and I've simply removed it. The headrest juts forward so far that it actually pushes her head forward when she sits back in the chair. To make the headrest useful it would require a redesign of the headrest mount so the unit could be moved backward as well as swivel.