Personalized Coolest Mining Engineer Baby Bib. A snowman holding a shovel and The world's coolest mining engineer text is a humorous gift design for college students and engineers on birthdays and winter 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"