Anti Pollution Washable Cotton Face Mask with Replaceable Valve Filter, Black or Beige

Mask with Activated Carbon Non-Woven Fabric, PM 2.5 5 Layer Filter, Protection for Pollen Allergy, Woodworking Mowing, Running, Cycling, Outdoor Activities Unisex Universal Size - Face shape design, nose portion of an aluminium sheet secured to prevent slipping and velcro adjustable size, suitable for most people to protect the face Material - The dust mask is made of activated carbon non-woven fabric, comfortable to wear for protecting the face. With good windproof and dustproof effects Unique Ventilation Design - Mouth has ventilation holes, and a double air valve helps you breathe easier and freely when riding the bike.