We had an employee who had two broken chairs in the past year. This was probably due to his size. We purchased this chair he stated that it was comfortable and it seems to be much more capable of handling his size.
I've had this chair for a while now. I'm 5'10" and 300 lbs and at first it was great. One day the lift rod gave out and it couldn't be raised any longer. Staples sent me a replacement lift rod and caster base because they were stuck together. A few months later the metal base started to cave in where the caster wheels are attached. Now it won't roll properly and the wheels drag the floor. I've just had too many problems with it to give it a good rating even if the chair itself is very comfortably over-sized and supportive. I use the chair well within the limits using it less than 8 hours a day.