Personalized Trombone Player Future Baby Bodysuit. Future Trombone player Baby Bodysuit - Football White and Black with has when I grow up I'm gonna be a trombone player slogan and colorful kids handprints. Our unisex one piece baby bodysuit make great gift for newborns, babies, infants, baby showers and expectant moms. An ideal gift for any new parent who will want one in every color.