Personalized 4th Birthday Penguin Long Sleeve T-Shirt. A penguin in colorful shorts has a triple scoop ice cream cone to celebrate the four year old's 4th birthday! 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