Personalized 3rd Birthday Penguin gift Long Sleeve T-Shirt. 3rd Birthday Penguin Long Sleeve T-Shirt - White has happy Penguin bird wearing a number 3 and a colorful party hat. 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