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Title: Piece of Crap, avoid if you spend any real time in the chair
Review: I've had this chair for a while. It's junk! The joint between the legs and the swivel/frame is loose, so in addition to the instability of the ball, the whole chair wobbles - in my case, the frame moves about 8" in all directions from center when sitting on it, it's that loose. No apparent way to adjust or fix. This is way beyond the desired wobble of the ball itself. It doesn't appear to be well made. I wish I had returned it while in warranty. Lesson learned.
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