Cloth mask with interlayer of filter material! A medical mask can be cut into two pieces of filter material for use. ＊Description of each part Nose bridge: lined with thick cloth and plastic layer to reduce the passage of air. The embedded wide iron wire is closer to the medical mask, and the glasses are less likely to fog. Filter material interlayer: completely cover the key parts of the mouth and nose as the main air exchange area. You can put half a medical mask as a filter. Both the upward and downward protruding edges provide more complete protection. Chin covering area: slightly thickened to increase protection effect. ＊Restrictions Since the half-piece medical mask is used as the filter material, and the key parts need to be completely covered, the height of the mask is limited, and it is suitable for those with small faces. Please measure the distance from the midpoint of the eyes to the chin (refer to the picture): Less than 11.5cm is more suitable, 11.5-12cm will be slightly tight, not more than 12cm. According to human body measurement literature, about 80% of women and 50% of men are suitable. ＊Material Strictly selected thin and light breathable cotton fabric, which can be quickly dried after washing. It is recommended to put it in a laundry bag for machine washing. Please refer to the fabric photos for the degree of transparency. *Note Masks are personal hygiene products, once unpacked, except for the flaws in the product itself, will not be returned!