1.combined with ergonomic face design: cover the nose beam. aluminum sheet is fixed and antiskid, wear firmly and protect in place
2.air hole: multiple small holes, good air permeability, plus the double air valve design, moist air in the hood, more unobstructed breathing
3.active carbon lining: it has super filtering protection function and can effectively filter harmful substances to human body.
adjustable patch is used at the back neck of the mask: adjust the size according to personal needs, and wear it more comfortable