Priced and packaged in increments of 50
Size: Sized for child 5.6in x 3.5in Multiple application: Suitable for use in schools, offices, construction sites, factories, laboratories and other scenarios. Material: These masks are made of 3 layers. First layer is made of non-woven fabric that can effectively filter particulate pollutants in the air. Second layer is made of Meltblown cloth that effectively keep away from impurities. Third layer is made of Skin-friendly filter cotton which is gentle and more breathable. These masks are class 1 medical devices, and can be used for healthcare use, but should not be used in surgical or high risk situations.