I just came from the comic store, with my boys and we came back with two spiderman anti-stress. They're fan of Spiderman, but they choosed Spidey over Iron man because it looks nicer. You can choose between Spiderman,Iron man, Hulk and Wolverine but the truth, and I quote my son "except Spiderman, the rest are quite ugly". Anyway, let's see how long they're going to last... I may even use it myself sometimes.