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By AaronBurns
#10985
Instead of a cylindrical piece of foam to squish down and expand in your ear you can personlize the shape, so that all the disturbing sound is blocked, and not only some of the "damaging sound frequencies". You simply use a semi-liquid foam to fill your ear canal and outer surface and then let dry for a short while. You can always clean and rewear each set of ear plugs. A personalized fit to everyone's different types of ear canal shapes. This mimics the way a mouth guard is made.

Reward: Multi-colored ear plugs sent via air mail to my home address...
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