Personalized Coolest Nuclear Engineer Baby Bib. The world's coolest nuclear engineer text and a snowman surrounded by a green glow and holding a Geiger counter is a funny design for engineers at birthdays and holidays. 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"