Personalized Senior Year Rocks Baby Bib. Senior Year rocks text with three happy rocks holding 12th Grade flags is a funny gift design for parents, high school teachers and students. 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"