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These special wind noise filters guarantee optimal protection while at the same time all-round noises are still audible and communication and hearing are still possible. The green filter offers an attenuation which is useful in most situations. The yellow filter offers an attenuation for situations with extremely high noise exposing. This offers the motorcyclist to choose the right attenuation in every situation.
Motor and wind noise are damaging for the hearing. From a speed of 100 km per hour a motorcyclist is exposed to noise that exceeds 90 decibel. The law prescribes a hearing protection when the noise is above 85 decibel. Regular noise above 80 decibels will irrevocably lead to hearing damage. Wind noise is a big problem for motorcyclists. It not only leads to hearing damage, but also to a weaker concentration. According to several helmet tests not one helmet offers sufficient hearing protection.