Personalized Choo Choo Future Big Brother Long Sleeve T-Shirt. Future big brother Long Sleeve T-Shirt - White with a colorful choo choo train on it's tracks. Message says I'M GOING TO BE A BIG BROTHER. 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