Personalized Trick Or Treat Bat Infant Romper. Funny Halloween Infant Romper - White with cute vampire bat and stars says TRICK OR TREAT in purple and orange letters. Perfect for Halloween parties. Meet your new favorite outfit! Keep dressing simple with this one piece, lap shoulder t-romper. Super soft and perfect for baby's sensitive skin. 5.5 oz. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40; Heather is 90/10 combed ringspun cotton/polyester)