Personalized I Found My Unicorn Long Sleeve T-Shirt. A true friend is someone who will recognize you for the unicorn you are. I Found My Unicorn Long Sleeve T-Shirt - White, from the children's book "Bob the Unicorn" by Michelle Nelson-Schmidt. 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