Personalized Marching Band Grandma Music Gift Long Sleeve T-Shirt. Band Grandma Long Sleeve T-Shirt - Athletic Heather with treble clef logo and quote that says I'm here to cheer for my grandson. 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