Personalized Ice Pop 3rd Birthday Long Sleeve T-Shirt. Cute 3rd birthday Long Sleeve T-Shirt - White with ice cream pops in summer colors says BEING THREE IS SWEET. Perfect for chillin' on a third 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