Personalized Engineer White Text Shamrock Infant Romper. A white shamrock made from the word Engineer and small shamrocks is a unique gift design for engineers and engineering students on St. Patrick's Day and at Celtic festivals. 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)