Personalized Royal Trombone Long Sleeve T-Shirt. A trombone with the word trumpet wearing a jeweled crown is a humorous music design for horn musicians for marching band, back to school and graduation. 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