We have them for our children and love them. We bought them at idonme.com, I believe. My son thinks it's cool and knows if he gets lost he can show a cast member his ID so they can call his mom. Also, the info is hidden so that you can only read the info if the "case" is opened. We also have dog tags (armynavy.com) with our home number, my cell and my dh's cell numbers. I like to take the shorter chain and tag and attach it to my daughters belt loop. I tuck it in her pocket and she forgets it's even there.
Shell