Description:Function: anti-fog, anti-PM2.5, anti-pollen, anti-dust, trend, anti-street shotBreathing valve: new 3.0Filtering effect: 95% or moreProduct Name: with knee guard valve maskDouble-layer polyurethane filtration: the first layer filters large particles and dust, and the second layer absorbs unfiltered dust and bacteria efficientlyMask style: hanging earIs there a breathing valve device: yesMaterial: MicrofiberProtection level: KN95Fearture:Our KN95 mask/ hayfever mask keep you safe from air pollution. This respirator pollution mask with activated filters is the best breathing mask which  can prevent haze, dust and pollen, keep warm and prevent epidemic infection, and humidity thus keeping you healthy and safe from many diseases.Package included:1 * Face mask
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