Personalized Autism Puzzle Awareness Niece Long Sleeve T-Shirt. Autism awareness Long Sleeve T-Shirt - Pink has I love my Niece quote with puzzle piece and pink heart for an Aunt to show love and support for the niece who has autistic spectrum disorder or Aspergers. 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