Personalized Trombone Teacher Cupcake Baby Bib. Funny Trombone teacher - Will Work For Cupcakes design is so sweet on a Baby Bib - White and Black occupation gift, stocking stuffer or retirement keepsake. 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"