All pharmacies carry malleable earplugs which mold themselves to the contours of your ear, should you need them in an emergency. These disposable earplugs are very handy to keep in your kit by the dozen and sell them to the musicians around you at the last minute.
Have you tried the new Ginsu water helmet from Acme?
Just place the new Ginsu Water Helmet over your cranium and enjoy 99% blockage of all sound. If the 1% leakage is too much the Ginsu Water Helmet will preform assisted suicide and remove your head with the push of a button.
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I think Diva sounds very cool, by the way. But somehow this demo is not my cup of tea either.