Reusable and washable. Allows easy breathing without restriction. Pocket for optional PM2.5 Activated carbon filter (sold separately). Remove any filter prior to washing. Secured with adjustable elasticated ear loops. Shaped to fit snugly on the face and under chin. Bendable and adjustable 'nose wire' prevents glasses from fogging. Non-medical. Conforms to standards GB18401-2010B. One size fits all. AFNOR SPEC S76-001 ? Eurofins Test CH_PCL_1 Class 2.
Outer layer: 100% Woven cotton.
Mid layer: Filtering non-woven polyester.
Inner layer: Soft-feel 100% woven cotton