The 50% cotton / 50% polyester Batman Greyscale Glow in the Dark Kids T-Shirt is created by super famous producer Kids Republic and...here is the shocker...GLOWS IN THE DARK! Never saw that one coming but that will probably be the last time you get to say that about this quality t-shirt! The Batman Greyscale Glow in the Dark Kids T-Shirt is a dark heather grey t-shirt with the classic Batman symbol in slightly distressed fashion; however, turn off the lights and this puppy glows like the Riddler left it behind! You won't need to worry about your child sneaking up on you as much, that's for sure.