We had high hopes for this chair, and ordered two so we'd have a matching set for our shared office space.  Upon assembly, we noted that several of the holes for the bolts were not lined up well with the actual adjoining piece, so it made it difficult and time consuming to assemble. Once complete, we sat down to try the chair out, and immediately knew it wasn't for us.  The back of the chair actually pitches your forward, which is not comfortable.  I guess it's intended to help you sit up straight, but this actually was a very noticeable forward tilt.  Even after adjusting the turn function as much as possible, we could not get the back of the chair to give much in this regard.  Therefore, we returned them both.  As an additional note, there was a very strong vinyl smell when we opened the box.  It did dissipate over time, but it was very strong until you air the chair pieces out.  Not recommended.