Personalized 1st Birthday Unicorn Balloon Long Sleeve T-Shirt. A cute little unicorn with a pastel rainbow mane flies high in the air holding on to a pink balloon that says "I'm 1". Great first birthday present for your little one. 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