Personalized Race Car 3rd Birthday Long Sleeve T-Shirt. Race car 3rd birthday Long Sleeve T-Shirt - Charcoal with red race car, checkered flags and big number 3. Side of car says BIRTHDAY CHAMP. 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