Personalized Rocket 3rd Birthday Baby Bib. Happy 3rd Birthday! A rocket blasts off from an alien world with a giant 3 for the three year old's third 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"