SpecificationsHign-concerned Chemical:NoneType:Cycling Face MaskMaterial:POLYESTER,NylonOrigin:Mainland ChinaCN:GuangdongCycling Face Mask with Filter Dust Mask Sport Washable Reusable Facemask for men Actived Carbon FiltersHEALTHY BREATHING: Design for comfortable protection against dust, pollen, fumes, common airborne irritants, and other non-oil based particles. It will help you breathe in a cleaner, healthier way.UNIVERSAL USAGE: Made for home improvement projects: as a paint mask non-oil based , mask for cleaning, woodwork, mowing, etc. It can also be used as an mask to filter allergenic pollens and as a mask for running and cycling. Similar to the elevation - It may also help your lung capacity training by mimicking high altitude/low oxygen level conditions.COMFORTABLE FIT: Made of elastic nylon and spandex, lightweight material, soft texture, quick drying, breathable and comfortable to wear. GeneralMask material: elastic nylonFilter layers: including non-woven fabrics, melt-bow fabrics, and activated carbon layerFilter packing: 10 filters in one bagAll mask with ONE filter in