Personalized Boy 1st Birthday Cow Number 1 Baby Bib. Make your child's first birthday memorable with our Cow Number 1 design apparel and gifts. So, have you heard the moos? Get your hands on these fun and adorable items today! 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"