Personalized Tuba Geek Toddler T-Shirt. Tuba Geek Music Toddler T-Shirt - Football Blue and White is fun for the whole tuba section in marching band or concert band. You'll love this funny tuba music slogan. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.