Feature: 1. Automobile fire-resistant and heat-insulating pad with strong heat insulation performance. 2. Suitable for most vehicle models. 3. Can be applied to car doors, roofs, floors, hoods, firewalls, chassis, trunks, and trunk covers. 4. Offers excellent sound absorption and effective vibration damping. 5. Non-toxic, odorless, and safe for use. 6. Waterproof and dustproof for added durability. 7. Features self-adhesive backing for easy installation. 8. Installation instructions: 9. Clean the surface thoroughly before application. 10. Ensure the insulation pad is firmly bonded to the metal surface for optimal adhesion and damping results. 11. Avoid covering any wiring or ventilation openings during installation. 12. Additional tape can be used to reinforce the bond if needed. 13. In cold conditions, gently heat the pad with a hair dryer to soften it, then remove the release liner and apply. Specification: Material: Aluminum fiber + sound-deadening cotton Size 1: 50*200cm*3mm Size 2: 50*200cm*6mm Size 3: 50*200cm*10mm Package List: 1 x Car sound insulation pad Note: Do not install on direct heat sources such as exhaust pipes, mufflers, or turbocharger components.