Personalized Pi Math Day grunge Infant Romper. Pi Math Symbol Infant Romper - Light Blue has fun grunge look. graphic licensed from and c. www.graphicsfactory.com 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)