Personalized Worlds Best Trombone Player Baby Bib. Cool trombone player gift has Worlds Best trombone saying in two tone sports style design and comes on this fun trombone Baby Bib - White and Red gift for your trombonist in marching band or jazz groups. 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"