Personalized Kawaii Pencil Case 100 Days Smarter Infant Romper. Infant Romper - White with funny kawaii cartoon pencil case with eyeglasses and school supplies (pencils scissors, ruler) says I'm 100 Days Smarter. Cute 100 Days of School gift. 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)