Lego Super Heroes Boys Top with Flannel Pants Pajamas Set (Little Kid/Big Kid) 100% Polyester Imported Machine Wash Set includes soft poly top with matching flannel pants Sublimated graphics; Elastic waist Ribbed-knit collar; Double stitched hems; Long sleeves Features Lego DC Super Hero characters, Superman, Batman, and The Flash Sleepwear tailored in flame resistant fabric for fire safety