Personalized Irish American Flag Infant Romper. Irish American pride Infant Romper - Black with USA flag and shamrocks in the national flag colors of Ireland. St. Patrick's Day, St. Paddy's Day. Irish novelty gifts for parades and parties. 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)