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1. plastic nose piece, effectively increase the breathing space of the nose, so that breathing more comfortable and smooth; adjustable nose piece according to each person different nose shape to get fit with the face, so that the sealing effect is better
2. the adjustable size of elastic buckle, so that more comfortable to wear comfortable
3. the next along the intimate U-shaped design,increase the mouth and jaw comfort and sealing,does not affect the language of communication
4. insert the 5 layer filter PM2.5 filter
5. plug-in design
6. fine denier polypropylene fabric,with soft,warm,good moisture permeability and wicking effect,so that exhaled gas is the outer layer of cotton adsorption,the face to keep dry,comfortable,lasting effect