Personalized Big Brother Astronaut Baby Bib. Big Brother Astronaut is so cool, he's riding a skateboard on the moon. You really have to look up to him! Cute gift for any big brother with big dreams. 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"