Personalized Smart Chemical Engineer Baby Bib. Chemical engineering, the profession for intelligent people is a humorous design with attitude. Fun gifts for college students and engineers at back to school, birthdays, holidays and graduation. 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"