Personalized Royal Bioengineer Infant Romper. Bio Engineer text wearing a crown is a humorous bioengineering design. Tickle the funny bone of your favorite bioengineering king or queen 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)