Won't stay up
I bought this for my sister, a massage therapist, and she has problems with it falling and not staying put in the height she needs it sometimes.  The air goes out and it sinks at weird times which is frustrating for her. She is on the heavy side, but this is advertised as a heavy duty high weight limit stool and really isn't.  Other than that the construction is good and the wheels roll very well.  The seat is comfortable and sturdy.  Watch out if you go to pick it up by the bottom, the shaft is VERY greasy and will get all over your hands.  This probably adds tot he problem she has with getting it to stay at the height she sets it.
Rating: 3 stars