What it is 3 mm automotive soundproofing pads made from a multi-layer blend of cotton, rubber and foam with a rubber-plastic outer layer. Designed as a universal sound absorption solution for the entire vehicle. Key benefits (why you need it) Reduces cabin noise and vibrations so driving is quieter and audio systems perform cleaner. Stops rattles and fills gaps on panels for a neater, more comfortable interior. Waterproof and flame-retardant outer layer protects surfaces and maintains performance over time. Main features Thickness: 3 mm — slim but effective for sound absorption without changing fit or clearance. Materials: cotton + rubber + foam core for noise absorption; rubber-plastic outer layer provides waterproof and flame-retardant properties. Surface: soft, clean finish that won’t scratch interior panels. Customizable: easily cut to shape to fit different panels and spaces. Easy installation: self-adhesive backing adheres directly to surfaces; no complicated tools required. Performance Good sound absorption across a range of frequencies typically encountered in vehicle cabins. Dampens airborne noise and reduces panel vibration to improve interior quietness and audio clarity. Where to use it (practical applications) Door panels: stick to the inner door skin to reduce wind and road noise and prevent door rattles. Floor and trunk: lay under carpets or in the trunk to absorb road and tire noise. Roof, wheel arches or interior panels: apply to damaged or noisy panels to damp vibrations and clean up sound. Quick installation guide 1. Clean and dry the surface. 2. Cut the pad to the required shape and size. 3. Peel the self-adhesive backing and press firmly into place. 4. No special tools needed; trim edges for a neat finish. Compatibility and sizing Universal fit — can be trimmed to suit most car makes and models. 3 mm thickness keeps fitment simple while delivering measurable sound absorption. Safety and durability Constructed with waterproof and flame-retardant rubber-plastic outer materials to resist moisture and meet basic safety expectations for automotive interiors. Use these pads wherever you want a quieter, cleaner-feeling vehicle interior with a straightforward, tool-free installation.