Personalized Unicorn Birthday Train Infant Romper. A cute rainbow colored unicorn rides a steam train and lets the world know It's My Birthday! Cute gift for anyone who loves unicorns and trains. 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)