Very good instructions for assembling but headrest screws were too narrow and had to call for a replacement of them and also right armrest was wobbly and being replaced. Hopefully will work when received in a few weeks. The chair is very comfortable but want the headrest attached. I am a senior citizen woman who assembled it!
Chair is as advertised had no issues installing other than I really had to tighten it so it had some stability. I did switch out the wheels for the rollerblade kind for a nice smooth roll.
This chair combined comfort and affordability... currently we are in the progress to see how long it will last... it might not be the best choice for all day sitting. For us it serves its purpose well. 2 to 4 hours of usage daily...