Personalized Retro Rainbow World's Best Grandma Baby Bib. Give your grandma the recognition she deserves with this stylish and funny apparel. It's a perfect way to express your love and appreciation for her unique role in the family. Whether she's a nana, granny, or just the best grandma ever, this design is a delightful reminder that she truly is the world's best! 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"