Check the listing for details. Face Mask Active Carbon Filter & Breathing Valve + 2 Free 5Layer PM 2.5 Filter ✅. Condition: New with tags. Listed at 8.98 USD. 2020 hot sell in the United States bicycle neoprene (Material for Black, Blue, Orange is Non Woven Fabrics) face cover with breathable valvesReusable & Washable - Adjustable Nose Clip - US Stock🔔Fast Free Shipping From California USPS First Class Package 1 Washable Mask + 2 PCS Five Layers Filters Size : One size Breathing valves With filter - 5 layers of protection Mounting ear design Material: Non Woven Fabrics ( Black,Orange,Blue) Material for Black, Blue, Orange is Non Woven Fabrics Remove the filter before washing!Wash it before you wear it. Multipurpose - cycling,running,Travel Precautions 1. The mask can be used for more than 2 years, and the filter is recommended to be replaced every 30 days. （Haze area, depending on the situation (the filter becomes black or damaged, please replace it in time） The mask Black, Orange, Blue, you can remove the filter first, (Soak in warm water for 15 minutes, the taste will slowly disappear, the principle of filter activated carbon cannot be washed) No returns accepted!All sales are final and not refundable.