Personalized Dump Truck 1st Birthday Infant Romper. Infant Romper - White with big number one and yellow and orange dump truck with dirt graphic. This Is How I Roll. 1st birthday gift for boys and girls who love construction and dump trucks. 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)