This double-sided anti-fog protective mask is made of professional and highly transparent PE material. The bracket of the mask can be adjusted to protect the face and eyes in all directions. The PE mask has anti-fog layers on both sides, and does not fog up when the temperature difference changes. In order to protect the anti-fog effect of the mask, please do not wipe it directly by hand or other tools, otherwise it will damage the layer and weaken the anti-fog effect of the mask. The size of the protective mask is 28cm x 19cm x 0.2mm, which is comfortable to wear and can provide comprehensive protection for the face.