Personalized Trombonist Worlds Best Toddler T-Shirt. Fun trombone instrument silhouette with World's Best Trombonist music quote comes on a Toddler T-Shirt - Football Blue and White gift for the trombone player in band or marching band. Add a personalized name for a custom gift. 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.