Personalized 5th Grade School Life Long Sleeve T-Shirt. Colorful 5th Grade Is My Life Long Sleeve T-Shirt - Red for the school teacher. 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