This is a soundproof cotton for the trunk of a car made of safe and mild materials. It has reasonable design and practical functions. It can effectively help you sound insulation and reduce noise, and has excellent heat insulation and cooling effects, making your car safer and more stable, and bringing you a better and more comfortable driving experience. Features - Color: Black+silver. - Material: Rubber+PVC. - Size: 1000.00X5.00X0.50cm/ 393.00X1.97X0.20in. - It has a simple and convenient installation method that can better help you save time and energy. - Sound insulation cotton can help you effectively reduce noise and create a better environment for you. - It is mainly suitable for car trunks, which can easily reduce noise and heat insulation, which is very practical. - It can be very well applied to your life, such as studio or home theater, it can play a practical effect. - You can buy this professional and practical soundproof cotton at an affordable price.