Personalized Trombone Halloween Pumpkin Long Sleeve T-Shirt. A pumpkin sporting a grin that spells trombone is a humorous Halloween gift design for trombonists, school music teachers and students in concert, jazz and marching band. 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