It can be used as thermal insulation in dissipating heat, reduce energy consumption of conditioning, save fuel and make your car cooler in summer and warmer in winter. heat shield Car Sound Deadener,Excellent sound absorption properties & good vibration ,it can reduce ambient 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 FoamsTypical Temperature Stability: -40Celsiuso +100Celsiuscolour:blackMaterial:Rubber cottonsize:50*30*1cmPackage Contents:9*Car Sound Proof Insulation FoamsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.