Personalized Marching Band Funny Long Sleeve T-Shirt. Funny Marching Band Long Sleeve T-Shirt - White which features a drill chart and funny what part of this don't you understand saying. 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