Personalized Autism Acrostic Youth Long Sleeve T-Shirt. Special autism awareness Youth Long Sleeve T-Shirt - White with jigsaw puzzle pieces and an acrostic message: ALWAYS UNIQUE TOTALLY INTELLIGENT SOMETIMES MYSTERIOUS. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)