11.一枚ずつ密封袋入り
1.4 layers structure
2.special active carbon use
3.melt-blown method (melt-blown have 95% up efficiency of filter to filter to the 3.0×10-6m particle)
4.elastic ear loops
5.form fitting design
6.soft,non-irritating
7.comfortable
8.easy to breath
9.excellent filtration
10.permits air passage,glasses do not fog
11.fiberglass-free
12.water-proof