Sound Deadener Heat Insulation Mat. Features: This Great Product Will Keep the Inside of Your Ride Cool and Quiet - It's Easy to Install and Keeps out the Heat and Unwanted Noise, Works So Good That of You Put It in Your Doors It Gives Them a Solid Modern Sound when They Close.Could Be Used on Floors, Firewall, Door Panels, Trunk, Roof and Any Interior Areas That Should Be Insulated Material:Alumina Fiber+ Muffler Cotton No Powder and Excellent Vibration Resistance Excellent Sound Absorption Properties Will Not Contribute to Metal Corrosion Easily Installs,fit All Kinds of Vehicle Type Self Sticking Backing and Waterproof,dustproof. Specifications: Material: Aluminium Foil Size 9pcs: L * W = 50cm/19.69 "X 30cm/11.81" = 14.4sqft 12pcs:L * W = 50cm/19.69 "X 30cm/11.81" = 19.2sqft Package Included: 9 XSound Deadener Insulation Mat . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.