3D SW Custom Bicycle Face Cover PM2.5

High quality Anti-pollution bicycle cycling Face Mask mouth-muffle with filter
Face Shape Design, Nose portion of an aluminum sheet secured to prevent slipping
With activated charcoal filter, filters out exhaust emissions
Ventilation Holes on Mouth, Soft and comfortable to wear
Usually, one filter can be used for 30 days, It is recommended to change at any time during heavy pollution periods Filter Activated Carbon PM 2.5 FM Filter Activated Carbon PM 2.5 FM.
Outdoor activity suitable for dust, anti-vehicle exhaust, anti-pollen allergy, PM2.5, for cycling, hiking, skiing, and other outdoor activities.