Very good and honest product. The photos are from a Punto mk2 where you can see the lack of insulation it originally had and the result after the installation. On the road, you notice that fewer noises are heard inside the cabin.

It sticks easily (basically you need to be a bit careful because if it sticks, it can't be removed without material loss).
It is "hard" to cut and needs a utility knife.
It was installed on the car floor and in my opinion it does a better job than the simple felt that was there before.
The small imperfections visible in the photos were corrected with a utility knife.

Difference in noise and vibration was noticable on a Renault Clio 2, installed inside the door and on the flooring