This chair is the most uncomfortable office chair I have ever bought! It is hard as a rock with absolutely any give the lumbar pillow is way to big; the usb cable for the massage is too short I would have to be right on top of my desk to work. The grips on the base above the wheels are unusable because the fold up leg pillow does not allow your legs enough room to reach the grips. The wheels do not roll without a lot of effort.  I do not think who ever designed this chair ever sat it it!!!!!!!