Personalized Dance Teacher Gift (Worlds Best) Long Sleeve T-Shirt. Worlds Best Dance World's Best Dance teacher Long Sleeve T-Shirt - Black has a sports style logo. 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