Operational masks can be divided into three holes and one hole. In addition to the different basic styles, they can also be divided into two types according to different regions: practical masks for southern tropical areas and practical masks for northern cold areas. They can effectively cover and protect the face and ears while ensuring smooth breathing. Mainly used for police officers to deal with emergencies and implement arrest protection, can enhance the concealment of action, improve the deterrence of bandits. DuPont materials or cotton.
