Personalized Big Brother Monster Truck Infant Romper. Big Brother Monster Truck. A big red monster truck with muddy tires jumps over the word brother. Cool gift for any big brother! 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)