Roll Pack Liner 157 (4 mm) mil Car Sound Deadening Closed Cell PE Foam & Heat Insulation mat - Sound Deadener material & Heat Barrier 12 sqft

Cheap and works well as sound deadening inside my truck doors. Quiets things down a bit and improved sound from speakers. Not as good as dynamat but a fraction of the cost and weight.

The product seems to be true to form i am attaching it under floor mats in a tesla and notice that this "very sticky" stuff is able to un-stick around corners. I cleaned the area to be treated with windex first and then a microfiber to help contact but some small challenges remain. Hey, it is my first time using this and the roller for it so maybe I am doing something a little wrong.

Works good!

Good amount of foam. I used it on my tortoise tank sides back and bottom to help hold the heat

It works but it doesn't stick that well. Make sure to be aware of this around curves.

Return never open but it feels and looks like a 5.

Adhesive not strong starts coming off roof of car quickly had to use adhesive spray

Somehow I ended up with second roll of a different size, so here is the review of the second roll...I haven't noticed much difference with this sound deadener, but I also drive a convertible so that doesn't help any. It's very easy to work with and cuts easy with a razor knife or scissors. Conforms easily to curves. With the 2 rolls I have, I had plenty to do most of my car and enough left over to do the doors of my wife's car and maybe some other spots as well.