brand new and high quality Features: 1. This product comes with a strong adhesive, at room temperature above 0 degrees without additional heating can be directly pasted. The higher the outdoor temperature paste the more solid construction can not be removed after the paste is extremely strong! 2. Noise experts recommend doing sound insulation at the same for time do not forget the door of the vibration, in the paste before the sound of cotton can be posted before a few vibration plate excellent effect, needs of the entire three-car sedan about 10 meters. 3. Special Note: If the owners such as the engine noise, you want to completely reduce the engine noise alone on the hood on this point sound insulation cotton is not as simple as the engine noise cotton recommended to do the hood and U-slot noise effects need to use aluminum foil sound insulation Cotton + aluminum plate butyl rubber shock plate (18-25 or so), the engine noise is a very complex system of sound engineering, you need to do fenders, firewall, instrument panel U-shaped slot sound insulation engineering! Attention Please do not go wrong Mistakes with a long for time to burn and take the gas stove to burn, because the cotton with a sticker does not fires the other car can not reachthe fires conditions Once the fires conditions in addition to metal parts inside the car can fires any items Burning, the proposed owners do not privately installed electronic appliances, the proper use of for cars. specification: Shape: square Material: Rubber Flexural strength: strong Compressive strength: strong Form: fibrous Size: 200x50cm Thickness: 3mm/6mm/8mm Quantity:1roll Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1xCar Soundproof Insulation Foam Sheets