Style No.: 
MSK-132
$3.45

dark green color cotton fabric,white color cotton fabric inside, between face and inside fabric, there is a layer of Nano-film which can filter PM2.5  more than 90%.  and inside also have side pocket, can insert a replaceable meltblown filter also can filt  PM2.5 more than 90%,so the mask has double filting. each mask go with one filter.