The 100% cotton Thor Grey Hammer Kids T-Shirt lets you know the forecast; cloudy, with a chance of Odin-blessed hammers! Those things can cause an insane amount of property damage so you might want to protect cars, windows, and household pets. I'm also not entirely sure if insurance companies cover that...you know, that whole Act of God(s) clause! The Thor Grey Hammer Kids T-Shirt is still a pretty awesome shirt though for the kiddies...even if they don't understand deductibles.