Personalized Nuclear Engineer Line Infant Romper. Nuclear engineer with a decorative line sporting a radioactive symbol is a unique gift design for engineers and students at back to school, 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)