Description Polyvinyl Chloride Foam. A Self-Sticking Weatherproofing Foam Tape For Eliminating Air And Moisture Leaks. WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer, birth defects or reproductive harm and Butyl Benzyl phthalate (BBP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov