The seat back is slightly unlevel due to the way it's mounted to the back bracket. The back cushion itself is also a bit larger (taller) on one side than it is on the other. The visual imperfections are slight enough that I didn't want to go through the hassle of a return, but noticeable enough that they bug me when I look at it. Otherwise, the seat cushion is thick and comfortable and the whole chair seems very sturdy. It is structured so that it leans back somewhat more than a standard desk chair but I'm getting used to that. If it weren't for the unevenness of the back piece I would be happy with it overall.