Especially for music lovers, there are now the Alpine Party Plug Pro ? Natural earplugs. These earplugs have special rectilinear AlpineAcousticFilters?. This means that the music is attenuated equally at all frequencies. The music quality remains perfect and only the harmful sound is muted. It’s like you’ve turned down the volume button. In addition, thanks to the filters you also won’t have an isolated feeling, and conversations remain properly audible.he earplugs are made of soft and flexible AlpineThermoShape? material. This forms to the ear canal for optimal fit and attenuation. The material contains no silicones. As a result, the earplugs don’t itch or irritate. Alpine earplugs are easy to clean and are durable.The Alpine Party Plug Pro ? Natural comes with a handy pouch to keep your ear plugs in as standard. You can also attach the pouch easily to your key ring. In addition, every pack contains a carrying cord. Attach the ear plugs to the cord and hang it around your neck. Ideal if you briefly take out the earplugs. You can quickly and easily clean the earplugs with the supplied Alpine Clean cleaning spray (5 ml).