Personalized Bob is a Unicorn Baby Bib. Bob is, indeed, a unicorn. He just needs to believe it, and he can be it. Bob is a Unicorn Baby Bib - Light Blue, from the children's book "Bob is a Unicorn" by Michelle Nelson-Schmidt. 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"