Personalized Vertical Trombone Baby Bib. A drawing of a trombone with musical text is a unique gift design for low brass musicians at back to school, marching band, birthdays, holidays and graduation. Our Baby Bib is rated high in convenience and durability and with a variety of fashionable colors, your baby can be trendy. Mix and match to any outfit. 100% cotton ring spun combed heather colors are cotton-poly. Width 7.75", Length 11.75"