Personalized Nuclear Engineer Line Baby Bib. Nuclear engineer with a decorative line sporting a radioactive symbol is a unique gift design for engineers and students 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"