Cell Damper soundproofing mat to reduce vibration noise. - Brand: Yawata Screw - Type: Soundproofing mat - Material: Cell Damper - Features: Reduces vibration noise Thank you for viewing. Although it is unused, there are scratches and dirt on the main body and the bag. There is no problem with use. Please refrain from purchasing if you are a smoker or are concerned about home storage. We are looking forward to your purchase if you understand.