Personalized Engineer Three Shamrocks Long Sleeve T-Shirt. Celebrate the wearing of the green with this three shamrocks and Engineer text design. Unique gift on birthdays, graduations and holidays for the Irish and the Irish at heart. 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