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Review title: Doesn't stand up
Product review: I bought this hand exerciser & within the second day the valve blew out with a hiss. I continued to use it, but by the 5th day I wore a hole in the ball itself. I was going to take it back, but couldn't find the receipt, of course, so was stuck with a flat leaky ball. I threw it away in the garbage where it belonged in the first place. Very disappointed.
