Personalized Allergist Worlds Best Long Sleeve T-Shirt. Allergist Long Sleeve T-Shirt - Charcoal gift. Give your favorite Allergist a fun sports look Worlds Best Violin gift. Add a personalized name for a custom occupation gift. Great gift idea for Allergist. 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