EVA Sound Deadener Kit is die cut for easy installation. Made from OE type, 1/16" thick Ethyl Vinyl Acetate (EVA) an asphalt based material, used for sound dampening. Apply directly to cab floor. Reduces road noise and cab harmonics for a quieter ride and insulate against heat and cold. To further insulate, use in combination with the Heat Shield Kits.Heat Shield Kit is die cut for easy installation. Consists of 1/4" thick, 24 ounce needle punched jute padding on one side which insulates against heat and cold. The other side has two layers of fiber reinforced aluminum foil reflecting up to 97% of radiant heat to keep you warm in winter and cool in summer.