Personalized Best Teacher Ever Baby Bib. Best Teacher Ever! Pow! Ka-boom! If you know a teacher who is a superhero, this is a great gift for them! Let them know they are the best teacher ever! 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"