This chair arrived quite quickly and was very easy to assemble.  Just pop the castors on and 4 screws to the base of the seat and you're pretty much done!

PROS: This is a very nice chair and it's really comfortable.  Nice modern look, the wheels are smooth on hard surfaces.

CONS: I had to jiggle the up/down lever a bit to get the chair to go down.  Also, the wooden arms came a bit damaged and there were clear finger smudges on the seat (I ordered the white). It makes me wonder if this wasn't a return.  It's not worth returning the item for though.