Personalized Structural Engineer Beam Infant Romper. Structural Engineer text with a steel beam. This I-Beam design makes a unique gift for your favorite engineering geek at birthdays, holidays and graduation. 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)