With Alpine MotoSafe earplugs you never have ringing in your ears after a long ride - You prevent hearing damage and feelings of fatigue from wind noise. Alpines MotoSafe Race has an Attenuation of 20SNR (Signal-To-Noise Ratio) to reduce the incoming noise by up to 20 deciBels. Designed for: Highway Race Tracks or for use with Open Face Helmets. Alpine MotoSafe earplugs have a perfect fit. This is because they are made of durable and flexible AlpineThermoShape™ material. The warmth of the ear allows the soft material to mould to the ear canal. Alpine MotoSafe earplugs are also the only ones on the market with soft filters. As a result they are also very comfortable under a helmet. AlpineThermoShape™ material contains no silicones. For this reason the earplugs do not sweat itch or irritate. You can wear them all day without any problems.