Two ear plugs with a fixed filter system. They are suitable for visitors of concerts and various music events. Protect your ears from excessive noise from music. Special acoustic filters ensure that the music and ambient sound as silent speech remain clearly audible, and you can enjoy the event without any health risks. The values of attenuation in Hz: 125, 250, 500, 1000, 2000, 4000, 8000. The attenuation in dB: 14.8, 15.0, 15.7, 18.7, 26.6, 24.4, 18.9. Color: silver.