Personalized 3rd Birthday Squirrel Long Sleeve T-Shirt. A cute squirrel holds a delicious cupcake for the three year old's 3rd 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