Personalized 21 on the Rocks Baby Bib. A large number 21 held up by three happy rocks and the text, on the rocks, is a funny birthday design for twenty-one year olds. 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"