Feature 1High noise reduction \u0026 thermal insulation properties. 2Strong temperature resistance and thermal \u0026 acoustic properties. 3Made of high-quality rubber and single-sided aluminum foil. Features: High noise reduction & thermal insulation properties. Strong temperature resistance and thermal & acoustic properties. Made of high-quality rubber and single-sided aluminum foil. Durable outer cover material for terrible conditions. Easy to cut & fit, strong adhesive backing. Low thermal conductivity, flame retardant material. No water absorption, no condensation. For car hood, door, chassis, air conditioning tube. For recording room, insulation room, etc. Specifications: Material: Rubber & Aluminum Foil Nominal Thickness: 5mm Color: Silver Placement on Vehicle: Left, Right, Front, Rear Size: 50cm*30cm / 19.7*11.8in Item Weight: 480g / 16.93oz Package Size: Approx. 50*30*6cm / 19.7*11.8*2.36in Package Weight: 490g / 17.28oz Package List: 12 * Sound Deadener Package List 12 * Sound Deadener