Personalized Big Sister Comic Book Infant Romper. Big Sister! Pow! Cool! A big sister is like a superhero, watching out for her little siblings. Cute gift for any big sis! 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)