I ordered 4 of these chairs and they are very comfortable and were relatively easy to assemble. However, for me the most challenging part was attaching the leg assembly with the swivel attached to it to the underside of the chair. Step 4 of the instructions refers you to a picture of the chair laid down sideways  and how to attach the 4 bolts to the underside of the chair but does not mention that you will need to swivel the leg assembly after loosely attaching all 4 bolts to the bottom of the chair.  I found it easiest to do this by placing the chair upside down with the chair bottom resting on a step so that I was able to press down on the leg assembly while rotating the swivel in order to gain access to the top of the bolts so that I could tighten them with the allen wrench.