Personalized Science Rocks Baby Bib. Science Rocks text with three rocks holding a chemistry beaker, magnify glass and a telescope is a humorous science design for back to school, holidays and graduation. 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"