Personalized Math Brain Baby Bib. Math Text with a happy brain is a humorous design for mathematicians, students and teachers of math. Fun gifts for birthdays, holidays, back to school 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"