Personalized Cordelia and Birds Believe in Yourself Men's Tank Top. If you believe in yourself, you can achieve whatever you set your mind to. Cordelia and Birds Believe in Yourself Men's Tank Top - White, from the children's book "Cordelia" by Michelle Nelson-Schmidt. Pre-shrunk 100% cotton 6.1 ounce Quarter turned Adult: S, M, L, XL, 2XL