Personalized Keep Calm Jingle On Infant Romper. Funny Christmas Infant Romper - White with with jingle bells says KEEP CALM AND JINGLE ON. Perfect for sleigh rides and Christmas celebrations. 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)