Comes in a large, heavy box. The box is packed with about 20 well protected pieces, a hardware kit, and an instruction sheet. The instructions are reasonably clear, with all the needed hardware clearly labeled. It took me about 45 minutes to assemble it. I assembled mine in an area with plenty of space to work. You may want to have an extra hand when attaching the back to the seat to assist in getting the holes aligned properly. The hardware kit comes with a spare of each piece of hardware, except for the hex wrench, which is a nice touch. The armrests do not adjust (except they move when the chair reclines); they are a little difficult to tighten enough so they are not wobbly, but I found if I pull up on them while tightening that helped prevent the barrel nut that receives the bolt from spinning. Fortunately, mine aligns perfectly with my mouse setup, so that's not a problem for me. So far, I find it reasonably comfortable; though I doubt I will make much use of the vibrating lumbar pillow. It seems to be sturdy and well constructed, but only time will tell how it holds up