Personalized Plumbing Rocks Baby Bib. Plumbing rocks text with three dancing rocks holding plungers and a pipe wrench is a humorous gift design to tickle the funny bone of plumbers and vo-tech students at back to school, birthdays, 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"