Car sound deadener (9-piece) for creating a quieter and more comfortable in-car experience Sound-proofing material (made of butyl rubber compound based substrate) helps reduce annoying vibrations and noises from the vehicle and road Strong self-adhesive backing for secure placement; reflective aluminum foil on the front for better thermal insulation Pliable material; easy to cut and install in a vehicle interior, cabin floor, or trunk; installation kit includes instructions Each 0.1-inch-thick piece measures 18 by 32 inches (LxW); 36-square-foot total coverage area;