1. Soft inner lining, the inner lining is made of cotton fabric, which is comfortable to contact with the face. 2. Insertion type filter interlayer, suitable size filter can be placed. 3. It can be washed with water. If there is a filter in the mask during washing, remove the filter in the interlayer and then clean it. 4. The outer layer of the mask is made of elastic cotton, and the inner layer is made of pure cotton.
**PLEASE NOTE** These masks make Great N95 Mask Covers But, do Not block against all bacteria. This mask doesn't block the current virus. There are no claims to this feature.