Personalized Panda Proof That Math Teachers Multiply Funny Baby Bib. funny math themed baby quote with panda says I'm proof that math teachers multiply 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"