Personalized I'm One Long Sleeve T-Shirt. I'm One! A foam finger and hand number one with "one" spelled out with a 1 in the O. Is there any doubt who is number one! Cute gift for any little sports fan. 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