Personalized Gray Ribbon Awareness tree Baby Bib. Gray Awareness Ribbon Tree Baby Bib - Purple can be personalized for brain cancer, asthma, allergies. 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"