Personalized Worlds Best Chemist Baby Bib. Great looking gift for the chemist, chemistry professor or chemistry major, this Worlds Best Chemist gift Baby Bib - Light Blue with blue and tan logo is a unique way to show you love them. 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"