Chair is too difficult to assemble because wheels are attached before seat and chair back are attached. Can't line up bolt holes for chair back with all the previous assembly rolling around on the floor.
Sat on every single chair at the Staples store and this was THE MOST COMFORTABLE. There were others that were double the price that wasn't as comfortable. Putting the chair together was also pretty easy.
I am pleased with the chair that I bought. I paid for it to be assembled at Staples. I bought a new chair because the previous chairs height could no longer be adjusted. I would recommend the chair model that I bought to others.