All those materials work well to absorb highish frequencies and would probably do the job mounted on something thin and rigid to support them. FYI mouse pad usually = neoprene with a fabric surface bonded to one side. The lead/neoprene sandwich stuff forms what is called a constained layer damping system which is effective at dissipating engergy due to the interaction between the mass of the lead and the lossiness of the rubber. It is commonly used to quiet generator enclosures and engine rooms. It may not be be self supporting, but who knows. Also not sure how it behaves rolled and unrolled repeatedly. You might be better off figuring the largest rigid flat pannel you can fit along one wall in your bag, and adhering sorbothane/neoprene/felt/whatever on to that.
Topic: Does Size Matter? (J-Disk Question) (Read 12438 times)