By adding a thick insulating layer to the inside of your hardtop, you can keep interior temperatures down in the summer and up in the winter. Vehicle testing proved it helps improve both cool down and warm up time. This headliner helps to deaden noise and gives a clean, finished look. Vehicle testing proved a 10% improvement in noise absorption due to rain, road, wind and powertrain sources. Features bound and finished edges. Easy to install and made from our very durable material. Will not mold, mildew or rot.