Personalized Trombone Rocks Toddler T-Shirt. Cute Trombone Rocks Toddler T-Shirt - Football Blue and White has a cool butterfly logo for the trombonist in band, jazz band and orchestral groups. Get matching trombone gifts for your music section. 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.