This is a package of 50 professional disposable protective masks with a fluid-resistant blue outer layer, a layer of melt-blown cloth, a fluid-resistant white inner layer, and a safety ear hook. This mask meets the following standards: ASTM Level 4 performance level, with fluid resistance, filtration, breathability, and flammability.
SIZING: Adults, School-age Children
FEATURES: These masks are composed of a layer of melt-blown cloth and two layers of PP non-woven fabric. There are three layers for air filters, which can effectively filter harmful substances. The rational mask design, along with adjustable ear straps, help to ensure tightness. The increased breathing volume of the mask improves breathability. The metal texture of the nose bridge lasts for a long time, making it more comfortable to wear and breathe. FUNCTIONS: These masks protect one from saliva droplets, dust, pollen, and PM 2.5 haze.
Hold ear-loops and nosepiece up. Pull the ear-loops to each ear, hang it on until comfortable, position the mask to fit closely to the face. Using both hands, mold the nosepiece to the shape of your nose by pushing downward and outward, while moving your fingertips down both sides of the nosepiece.CAUTION:
DO NOT use the mask with others. DO NOT use the mask in a hypoxia environment.