Personalized Irish American Flag T-Shirt. Irish American pride T-Shirt - Light Blue 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. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.