Personalized Mustache Autism Long Sleeve T-Shirt. Special autism awareness Long Sleeve T-Shirt - White with a jigsaw puzzle mustache says I MUSTACHE YOU TO BE PATIENT. 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