Siless Liner 157 (4 mm) mil 9 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat - PE Foam Sound Deadener Material & Heat Barrier

Easy to work with. The adhesive is sticky, duh. But what I mean is it's difficult to cut with scissors and sticks to fingers. It comes off by rubbing them on a cloth. Seems to stay adhered to walls and metals. I found it pretty satisfactory.

I used this on the roof of my Chinese excavator. That thing was humming along quite well at many frequencies and needed to be attenuated. I bought this product for this purpose but quickly found out that it was not dense enough. While it did attenuate the noise by about 50%, the material is just not dense enough to get more out of it. I will say though that the glue they used is fantastic. If/when I remove it to install something different, it’ll be a chore to take it off.

works good

Used as sound deadening in auto trunk area of an older car.