It's Peel n Seal, designed for roof sealing, but it's the same or very similar materials. Dynamat may work a little better, but it's about quadruple the price. You can buy it in the roofing section of Home Depot for about $17 for 12.5 SQ ft. When you apply it, clean everything VERY well with rubbing alcohol(2-3x), press it all on, then heat it all up with a hair dryer and press it on again. So far it has stuck very well, except under the rear deck, one strip keep falling off, but I'll admit I did a horrible job prepping that area...it was more of a place to put the scraps I had. Some say there is a odor that will eventually go away (a few weeks), but neither me or my wife can smell anything at all. 4 rolls did everything you see above, all that isn't done is about 60% of the trunk floor and the cabin floor (I'm not going to do the roof).
