Personalized Mommy of the Birthday Boy Baby Bib. Bring some joy and celebration to your boy's birthday with our Mommy of the Birthday Boy apparel and gifts. 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"