Personalized Yay! 31 Fun White Infant Romper. Yay! 31 and ready for fun in white text in a decorative white swirl is a fun design for friends and family at birthday time. 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)