I'm going to tell you the biggest problem with the shuffler chain. It's happened too many times to leave it unmentionable. If you're wearing this, and you're shuffling, AND you're smiling, it will hit you in the teeth. So you can't have all three of those things together. Either shuffle and smile, wear it and shuffle, or wear it and smile. Those are your only choices if you want to survive to see your children someday. I've lost so many of my favorite facial features from this thing flying up and slapping me with unforgiving force. But that's also because I shuffle with unforgiving force. Hmm.. that might the source of the problem. With like, everything in my life.