Personalized Worlds Best Doctor Long Sleeve T-Shirt. Doctor Long Sleeve T-Shirt - White gift has Worlds Best Doctor logo in navy blue and tan sports lettering. 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