Personalized Irish At Heart Long Sleeve T-Shirt. St. Patrick's Day Long Sleeve T-Shirt - White with a heart shaped shamrock says IRISH AT HEART. You can be Irish too, even if it's only for the day. Perfect for family celebrations, St. Patrick's Day parades or any time. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL