HOLIIBN Anti Pollution Face Mask with 5 Pieces N95/N99 Protection Air Mask Filters,Anti Smoke, Exhaust Gas, Dust, Pollen, Allergens,Hiking, Running, Walking, Cycling, Ski and other Outdoor Activities

Healthy breathing:Active carbon filters isolate 99.88% of dust, chemicals, fumes and particulates
Smooth breathing:Unique ventilation design, excellent permeability, double air breathing valve, air resistance is smaller,smooth breathing
Fashion pattern design:Attractive appearance and is simple and lightweight
Comfortable fabrics:Diving fabrics, soft texture,comfortable to wear
Adjustable Elastic Strap. One Size Fit Most Combination of ergonomics perfectly -- According to human face design, has a protective surface as the face size. The section of nose has sheet fixed to prevent sliding ,The mask can be further adjusted by hand to fit the unique features of your face.

About the material

Mask material: diving Fabrics
Filter material: activated Carbon
Inner cover material: Non-woven, activated carbon

Some questions about the use of this product

1:the mask can be wash.But you must put the filter down
2:the mask filter can be replaced,Here is the step:
Open the mask to expose the interior of the filter valve.
According to the OPEN directions on the valve,turn the valve counter(clockwise),to separate the valve.
Remove the filter.
Replace the new filter,reverse the above steps,clockwise rotation of the valve,over.
3:average size,stretchy and adjustable