Personalized Dinosaur 4th Birthday Baby Bib. Happy birthday! A cute dinosaur wearing a birthday hat peeks around a 4. Cute gift for the four year old's 4th 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"