Personalized 3rd Grade Teacher (Premium) Baby Bib. Genuine 3rd Grade Teacher Baby Bib - Blue and White has fun vintage label in pink with premium quality quote for your favorite third grade school teacher. 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"