Noico 315 mil as a whole is a high quality sound deadening insulation. Noico 315 mil is full weighted closed cell foam automotive sound deadener! Noico 315 mil sound deadening mat features high level of adhesion! Noico is easy to cut, install and it is overall a very user-friendly soundproofing material. <br> <br>Noico does really work! This insulation pads reduce overall noise and rattle level of your auto thus allowing for higher comfort. Noico 315 mil does also improve a quality of your car stereo system. However, using Noico 315 mil as standalone will not be 100% solution to sound proof your vehicle while still making a sensible difference. We recommend using Noico 315 mil as a second layer for heat and cool insulation in combination with a layer of butyl rubber, which is a special vibration damping material and additional noise barrier. PLEASE NOTE! Correct installation of material is 50 % of success in the process of car soundproofing.