Personalized Down Syndrome Custom Long Sleeve T-Shirt. Make a personalized Down Syndrome awareness gift with our signature blue and yellow butterfly logo that you can pair with your custom name or quote on a Long Sleeve T-Shirt - White. 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