I got tired of just wearing the same old chain bracket, which I could not take off by myself because of the lock device.  As long as I have to take this nasty drug, Warfarin, I might as well have some fun with letting people know that I have this medical condition.  These service the trick.  I can even pick my color for the day.  A little fun in the world of medically protecting against blod clots.  If you like fun, you might like these.  If you take things too seriously, stick to the sterile metal bracelets.