Personalized I'm One 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. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.