Pow! Zap! Kabam! With bold colors and a super sized number, this Superhero Birthday design is an awesome way to showcase your child's age and name. Celebrate an upcoming birthday with our personalized birthday shirts. All of our personalized birthday shirts are made of super soft cotton and are digitally printed with premium inks. This super design can be printed on cap sleeve tshirts, long sleeve tshirts, baseball tshirts or personalized baby onesies. Personalize this playful design with a child's name and age.