Personalized 30th Birthday For Women Funny Baby Bib. This 30th birthday celebration design says I'm rockin and rollin my 30th birthday. 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"