The 100% polyester Batman Costume Kids Romper is that leap of faith you'll take that will be the instrumental turning point in a child in your life's...um...life! It'll be the moment they'll decide to become a multi-billionaire and then use that money to fight crime! Booyah! The Batman Costume Kids Romper also comes with a detachable cape and may help them use karate to fall asleep. Hopefully.