Personalized Autism Grandson Support Long Sleeve T-Shirt. Show support for a grandson with Autism with this puzzle heart and I Love My Grandson with Autism slogan on a Long Sleeve T-Shirt - Vintage Royal Blue. 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