Personalized Big Sister Super Hero Baby Bib. Pow! Big Sister Super Hero is here to save the day! Bright and bold comic book style great for any super big sister. 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"