It's a great belt, but it took me about an hour to figure out how to undo it. There I was, pulling and pressing and trying to click the little clicky lever - all to no avail. My wife tried to help. Picture her down on her knees infront of me, pulling at my belt - every little thing she did only made it tighter! Eventually, we resorted to Youtube and discovered that you have to pull the belt slightly tighter before the little clicky lever thing would release. They really should put an instruction card in the box!