Personalized I'm 5 Dinosaur Long Sleeve T-Shirt. I'm 5! A grinning dinosaur wearing a birthday hat rips through the background to wish your little one a happy birthday! Great gift for your five 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