1 pcs per bag. One bag on this purchase.
Different from common mask whose working principle is using multilayers to build net structure to block dust, Sponge PM2.5 mouth mask is made of polyurethane which itself is 3D network structure. It is a high-density obstacle for dust, whose dust blocking rate reaches 99% and it is of strong defense against virus, pollen, dust and so on.
Sponge PM2.5 mouth mask is not common sponge mask, it is made of a kind of new organic polymer sponge, which can filter tiny particle in the air due to its three – dimensional network structure.
PM2.5 mouth mask are personal care protection.
Although it is thin, it is of strong elasticity. You can pull it to 60cm and it still stays in good condition, so as long as you wear it in commom way and don’t pull it with brute force, it will not be broken easily.