The product arrived without any physical damage or cosmetic imperfections.Used it on mechanical keyboard modifications and pretty happy with the outcome. The sound and vibration is being absorbed well enough and the hollow sound that was coming from keyboard is gone. The adhesion is so powerful that when I was reapplying some piece of it, the adhesion from old pieces left some mark on plastic and steel plate. In a case where you put it and leave it, it's a good thing, but in case where you experiment and peel Neoprene from surface, it can be a bit annoying to clean after.I didn't test it for waterproof capabilities, but when several droplets of water dropped on one piece of Neoprene, it absorbed it and didn't let it get through to the bottom case of the keyboard.The material is stiff and flexible enough to use it as a gasket mount. As it doesn't have memory foam capabilities, you should probably look for some poron foam or some other material, because the material won't bounce enough.
Rating: [4 of 5 Stars!]