Personalized Monster Truck How I Roll 1st Birthday Infant Romper. 1st birthday Infant Romper - White with a cute cartoon red monster truck with giant tires, flame decal and big number 1 with dashed road stripe says This Is How I Roll. 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)