Personalized Whatif Monster Try Something New Infant Romper. Give it a try, you just might like it! That's the moral of "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt, and that's also the moral of Whatif Monster Try Something New Infant Romper - Natural. 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)