The 60% cotton 40% polyester Batman Infant Costume Body Snapsuit will allow a certain infant in your life to become Bat-Baby! That means that they'll come to your rescue and save you from a full night's rest or from the dreaded 'sleeping in'! Hey, Bat-Baby is looking out for you and wants to keep you away from those little slices of death. With yellow trim and the likeness of Batman's torso, the Batman Infant Costume Body Snapsuit is the first logical step in becoming Batman. I think.