Personalized 3rd Birthday T-Rex Long Sleeve T-Shirt. A cute little T-Rex dinosaur smiles while wearing a birthday hat and a balloon tied to its tail. Cute 3rd birthday gift for your three year old. 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