Personalized 100 Days Of School Party Infant Romper. 100th Day Of School Infant Romper - Light Blue has cute alligator design for kids or teachers celebrating a fun milestone of the school year together. 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)