Personalized Future Musician Baby Long Sleeve T-Shirt. Future Musician Long Sleeve T-Shirt - Athletic Heather music gift for a baby girl or baby boy has musical notes and cute infant face. 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