The Flash gets mighty cold while sprinting at speeds above the light threshold. Something about the law of thermodynamics or something like. Or does he get warmer....? I have no idea, I'm a liberal arts major so math beyond counting on my hands is way out of my scope. Either way, this 50% cotton 50% polyester Flash Distressed Symbol Heather Grey Hoodie is great for keeping you snug as a bug and not allowing you to be compressed into an awesome singularity from the rigors of high speed travel. Features a highly distressed Flash logo on a subtle heather gray. Now, I wonder what would happen if the Flash threw a baseball at that speed...