1、Made of high quality diving fabric,soft,comfortable and flexible. 2、Replaceable active carbon filter inside removes over most dust, fumes, pollen, haze, chemicals etc. 3、Multiple holes and double air breathing valve for small air resistance and smoother breathing. 4、Ergonomic design to cover your nose and mouth,providing you great conservation. 5、Stretchy elastic ear loops for comfortable fit. 6、Adjustable headband with fastener tape and adjustable metal nose clip for stable and safe wearing. 7、Suitable for running, Cycle, camping, traveling, climbing, outdoor activities and daily use. 8、Please use it after washing your hands, and the filter cannot be cleaned or reusable. The Breathing Valve Mask with Active Carbon Filter features on its unique ventilation.Multiple holes and double air breathing valve for small air resistance and smoother breathing.Suitable for running, Cycle, camping, traveling, climbing, outdoor activities and daily use. Features: Made of high quality diving fabric,soft,comfortable and flexible. Replaceable active carbon filter inside removes over most dust, fumes, pollen, haze, chemicals etc. Multiple holes and double air breathing valve for small air resistance and smoother breathing. Ergonomic design to cover your nose and mouth,providing you great conservation. Stretchy elastic ear loops for comfortable fit. Adjustable headband with fastener tape and metal nose clip for stable and safe wearing. Suitable for running, Cycle, camping, traveling, climbing, outdoor activities and daily use. Please use it after washing your hands, and the filter cannot be cleaned or reusable. Specification: Material: diving fabric,plastic,active carbon Weight: Approx. 35g/1.2oz (include an active carbon filter) Package List: 1* Valve Mask with An Active Carbon Filter 1* Valve Mask with An Active Carbon Filter