It can be used as thermal insulation in dissipating heat, reduce energy consumption of air conditioning, save fuel and make your car cooler in and in winter. heat Car Sound Deadener, sound absorption properties & good vibration resistance,it can reduce wind, road noise and engine noise. With adhesive cotton insulation, it can be installed in any part of the car, such as doors, roofs, floors, hood, trunk room, trunk lid etc. Product Name: Car Sound Proof Insulation Foams Typical Temperature Stability: -40Celsiuso +100Celsius colour:black Material:Rubber cotton size:50*30*1cm Package Contents: 9*Car Sound Proof Insulation Foams Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.