Personalized Principal Butterfly Baby Bib. Cute blue butterfly on school Principal Baby Bib - Blue and White is perfect for back to school or as an appreciation gift. 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"