Show your grandson that you re his biggest fan in these That s My Awesome Grandson Out There Long Sleeve T-Shirt with trombone. 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 Long Sleeve T-Shirt.