Special Functions: Car sound deadener is used for creating a quieter and more comfortable in car experience, helps reduce annoying vibrations and noises from the vehicle and road. High Quality Material: Car noise sound deadener Made of high quality alumina fiber material, Waterproof, dustproof and Sound proofing, durable to use, easy to cut. Heat insulation: Sound deadener for cars with excellent thermal barrier that will block engine, exhaust, & summer heat, ensure your vehicle stays cooler in the summer and warmer in the winter, making your ride more pleasant. Easy Installations: Car sound deadening mat, Self stickers backing for secure placement, Easy to cut and install, suitable for various car models. Widely Applications: Car heat insulation mat, Widely apply in car roof, firewall, hood, engine compartment,chassis, exterior or interior bulkhead, wheel arch, body panels, under the seat, trunk lid and so on Specification: Material: Aluminum Fiber Size Chart: S: 50cmx200cmx5mm/19.69inchx78.74inchx0.20inch M: 50cmx200cmx10mm/19.69inchx78.74inchx0.39inch Package Includes: 1 Car Sound Deadening Mat Note: Please allow slightly errors due to manual measurement and different monitors.