Personalized Coolest Teacher Ever Baby Bib. Coolest teacher ever! Who's the best teacher? This one! Two thumbs up for this teacher. Great gift for your favorite educator! 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"