Personalized Chemical Eggineer Infant Romper. Eggineers are engineering eggheads and this humorous egghead with safety glasses and beaker of chemicals and the text chemical eggineer, is a fun gift design for 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)