Personalized Irish St Patricks Day Letter E Monogram Long Sleeve T-Shirt. Irish Letter E Long Sleeve T-Shirt - Black alphabet custom gift. Sure an this stylish St Patrick's Day letter E is just right for wearing on St Patrick's Day, if your name begins with E. 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