Personalized 100 Days Of School 100 Days of Cool Baby Bib. This Happy 100 days of school design is the perfect outfit for kids looking to celebrate their 100th day of school in style. With its cute design, it is sure to make your little one stand out. Whether it's for a boy or a girl, this outfit is a great choice. 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"