When I received the package, it was very heavy. I couldn't wait to open it. Because the chair at home had broken, I placed an order immediately when I saw this ergonomic chair. The quality of the chair is very good. I spent half an hour assembling it. In particular, The height of the chair, armrest and cushion can be adjusted. I am a heavy set person, this gives good supports on my back. my back feels mich better than the time I was sitting on the hard surface folding chair. I like it. it worth buying.