k n 95 mask hanging ear folding non-woven fabric 5 layers dustproof pm2.5 export n-95 protective face mask

anti-bacterial: the middle layer of the disposable mask is made of anti-bacterial filter, which has 99% anti-bacterial function, which prevents bacterial in air from entering the body harming health prevent inhalation of dust, etc.: the activated carbon cloth in the disposable mask can prevent poisonous gas, odor, and dust from entering the body through the respiratory tract promote blood circulation: wearing a mask in the cold winter can prevent the face from being frostbite and promote blood circulation in the face..syi