Baby Prisoner Halloween Costume: Infant Jailbird Costume (12-18 months with Bracelet for Mom) After trick or treating, it's back to the pen for your Infant Inmate. This adorable Baby Prisoner Costume is hilarious! We love this unique baby Jailbird costume for Halloween! Playpen no more your Infant Convict has escaped in his/hers Time Out Costume! Cap and jumpsuit with attached mesh tattoo sleeve, snaps for easy diaper change skid resistant feet