Personalized 2nd Birthday Bulldozer Infant Romper. 2nd Birthday Bulldozer Infant Romper - White has number 2 for your two year old on their birthday party day. Fun for construction themed parties. 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)