Storystore Foam Insulation Neoprene Sheets with Adhesive,Multi-Function Soundproof Large Marine Closed Cell Neoprene Rubber Roll (W：12 Inch T:1/8 Inch L:98 Inch,Black)

Worked great to insulate part of my reptile tank

I use this on either side of my window AC and it insulates really well.The only thing is the residue is hard to clean off the window

Easy to work with sticks well.dont know how durable it will be ..

I bought this to see if it would be a cheap alternative sound insulator for my desktop PC that I keep in a cabinet by my desk. The pc would reverberate at just the right frequency to essentially turn it into a subwoofer. I bought the 1/4" roll and lined the inside of it, and along with some padded feet, reduced the noise by over 50%! I don't even notice it anymore, and it probably saved me hundreds trying to over-engineer a quieter rig. Thanks!

Extremely sticky backing

This says neoprene, which it might be, but its so thin it just tears.The sticky back is convenient, but that's about it.

It's a simple matter of measuring and cutting with scissors to get the right sized piece. Getting the waxy paper off is a little tricky because you don't want to touch the adhesive surface with your Big Greasy Fingers. Just pick-off a corner and pull it part-way leaving the rest of the strip covered. Then start your assembly by pressing the sticky part with the rest of the (covered) strip aligned in the right direction. It helps to have a solid surface and the parts that you're putting together held down with clamps or weights. Then pull the rest of the paper off the sticky surface and press down as you go. This is a coordinated action, but after you've done it a couple of times you'll have it done in a professional way.The glue is strongest if you really press it down on the parts being joined. For something like an arm for a wetsuit (which is a cylinder) you can make a support as a cylindrical form that fits INSIDE the arm so you can press the adhesive strip to good advantage rather than doing it on a flat surface and then bending the assembled arm which puts stress on the adhesive connection. Very strong adhesive- hasn't unstuck once! -If for some reason it doesn't (like there's an air bubble or a dirty greasy edge) you can still use the nasty Neoprene contact adhesive to make it all good.

Don't waste your money. I live in a small RV and one roll didn't even cover half the closet. Definitely shopping around now to finish it. I can't understand how it cost so much for that tiny strip.