Specification:Material:The first layer: non-woven fabric (outer layer)The second layer: melt blown clothThe third layer: melt blown cloth(The two layers of meltblown cloth of the second layer and the third layer are glued together)The fourth layer: non-woven fabric (inner layer)Type: ears wearingSize:About 20.5cm*8.5cmApplications: daily life, factory,workshop,SPA,shopping,school,working places,etcProduct featuresAdvantages of fish masks:Comfortable to wear.Good filtering effect, especially for extremely fine particles and dust.Fits a variety of face shapes.High-quality protective effect. Its protective effect is the same level as KN95 mask, European FFP2 mask.Applicable to a variety of environments where protective masks need to be worn for a long time, such as factories, schools, companies, shopping malls, sandstorms, construction sites,, parks, etc.