Personalized This Dad Rocks Infant Romper. This dad rocks text with a happy, dancing rock is a funny gift design for fathers, stepdads and grandfathers on Father's Day, birthdays or holidays. 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)