Uniquely designed - Mask is made of activated carbon and non-woven fabric for easy breathability. 5-layer filter system effectively keep away from PM 2.5 and a range of airborne contaminants

Suitable for people and the occasion - Cleaner,Builder, Doctor, Student. Great for painting, construction, nail salons, medical, dental uses and people with allergies. Fog and haze weather,Gray sky,Hospital,Fog weather,Flu season, Dust weather, Snow weather, Building site Etc

PROTECT YOURSELF - wearing a face mask with additional filter reduces the risk of breathing in gases, noxious smells, pollen, smoke, dust and other harmful particles. Anti-odor, anti-dust, anti-gas, anti-PM2.5, Allergies,Pollution,Ash

Size and packing - Flters size measures approx. 12.5 x 8 cm/ 4.9 x 3.1 inches, compatible with most dust masks, easy to insert or replace the original one with no problem.50 PCS,the packing form is that 2 pcs masks are packaged in an individual bag and then 25 bags masks are packaged in a ziplock bag

Cost-effective - 50 Piece Mask Filter Value Pack.Usually recommend replacing the filter once a week, enough quantity for you to use for a long time