Personalized Biological Engineer Line Infant Romper. Biological engineer with a decorative line sporting an ant. A fun gift design for college students, research assistants and biological engineers 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)