Personalized Smart Mechanical Engineer Baby Bib. Baby Bib - Banana with "Mechanical engineering, the profession for intelligent people" in rough text with the M in mechanical wearing a hard hat make a funny design with attitude 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"