Ok, it's not kryptonite proof, but the Superman Symbol Twin Blanket is proof against chilliness, which is also good.  I mean, who wants to be chilly?  A 100% polyester, toasty, plushy blanket emblazoned with the iconic Superman Shield is perfect for curling up, snoozing under, or stretching out on.  Just ask Streaky the Supercat. This twin size blanket measures 60 inches by 80 inches.