Personalized Autism Awareness My Brother Rocks T-Shirt. By purchasing our Autism Awareness My Brother Rocks design, you are not only getting a stylish and meaningful product, but you are also contributing to a greater cause. Join us in making a difference and proudly display your support for autism awareness with this empowering design. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.