Assembly was about 15 minutes and can be a one person job. The seat cushion is a bit thinner than my previous chair (that was rated to hold 350 pounds) but no numbness at all.
Spending a lot of time in a home office requires comfort. After trying every chair in my price range at Staples I looked no further than this one. It gave me back comfort the seat was nice and firm proper height and arm rests were also on my check list. I could not be happier. While looking at reviews online a coupon popped up with a substantial savings which qualified with this chair. I am completely satisfied with my purchase.
Though it was a breeze to put together had to redo two steps because the picture directions were not clear. Some wordage explaining the picture would have helped. Beautiful chair once put together.