These pajamas feature graphics of your favorite superheros. It's a bird, it's a plane, it's Superman! your superhero will love this 2-piece short sleeve cotton pajama set that will have them looking just like the man of steel. They will be comfy under the covers dreaming of saving the day in these cotton, tight fit pajamas perfect for year round sleep, play or costume. The Dark Knight patrols the streets of Gotham City fighting villains and his logo in the sky assures the residents that the Caped Crusader is on the job. These are short sleeve, crewneck, cotton pajamas. Makes a great gift idea. For questions regarding sizing, please refer to size chart in the images.