Personalized Mechanical Heart Infant Romper. A mechanical gear heart design to tickle the funny bone of your mechanic or mechanical engineer at birthdays, holidays, graduation and Valentine's Day. 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)