breathable<br>Every pack include 1 mask + 2 pcs filter in set<br>You also can additional purchase filter to replace.<br><img src="https://gdetail.image-gmkt.com/994/604094054/2018/3/290eac7a-889f-4c6a-b569-d5b8bb03e545.jpg" ><br><img src="https://gdetail.image-gmkt.com/994/604094054/2018/3/d93ca5f4-ed93-4ca9-8e34-6060158b857e.jpg" ><br><img src="https://gdetail.image-gmkt.com/994/604094054/2018/3/a69f2391-f4aa-417b-860d-a9df25939991.jpg" ><br><img src="https://gdetail.image-gmkt.com/994/604094054/2018/3/f627d54d-9354-4c23-8427-bb584311f806.jpg" ><br><img src="https://gdetail.image-gmkt.com/994/604094054/2018/3/f4273769-5b26-4075-bf2e-b63e6c1f7b27.jpg" >