i have one and i swear by it. whenever me and my son go out we come home and he wont stop crying but if hes swear his bracelet he comes home happy as can be. i wont leave home without it anymore.
I know all three of us had one one when we were babies growing up, then we continued with our babies and now our grand kids, so on and so for. to some pei\ople this might be silly but hey i believe. lol.