Personalized I'm Three Comic Book Baby Bib. Pow! Cool! Ka-Boom! I'm Three! Cool comic book style birthday gift for any three year old superhero's 3rd 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"