I have used different sound deadeners in the past, but this one seems to be very good quality. Thick aluminum foil on one side. Easy to cut with scissors or a razor blade. the paper backing stays on good and is fairly easy to remove. The adhesive sticks like crazy, especially if the temperature is warm and you use a roller while applying it. Be forewarned that if you need to remove a section after it has been installed and rolled out, good luck as it does not come off easy or in one piece. Once installed it makes a notable difference in sound and pretty much eliminates that tinny sound from door panels, body panels, and floorboard. Precautions to keep in mind: the foil is thick and can cut you easily, wear gloves! Make sure to cover all surfaces you are working around that you do not want ruined, if you get it on your upholstery or carpet, it will not come off (at least I have not found anything that successfully removes it without making things worse!) Great product, the only real negative I found is that NVX folds the larger pieces in the box for shipping, this leaves creases and can cause the protective wax backing to lift up around those creases.