Check the listing for details. Dust Masks with 5 Carbon Filters for Woodworking Outdoor Anti-Fog Breathable. Condition: New. Listed at 1.99 USD. Features: 1. With activated charcoal filter, filters out exhaust emissions 2. Ventilation holes on mouth, soft and comfortable to wear 3. Suitable for doing activities like biking, riding, snowboarding, or climbing 4. Face Shape Design, Nose portion of an aluminum sheet secured to prevent slipping 5. Dustproof, windproof, lining with high adsorption material and activated carbon filter 6. Cleaning: can be washed, but do not rub 7. Material:soft Neoprene, comfortable wearing, feel is good, dustproof windproof, lining with high adsorption material and activated carbon filter. 8.According to the person face design, keep out the bridge of the nose the following part, the bridge of the nose department have aluminum sheet fixed, to prevent the slide. 9.Mouth part has ventilation holes, the magic stick fixed soft and comfortable to wear. 10.Suitable for running, cycling, hiking, skiing and other outdoor activities,it also can be used haze day protection, anti-dust and so on,The mask can be washed when they get dirty,the filter is replaceable Package Include: 1 x Outdoor Sports Half Face Mask with extral 5 Filters / only 2 Filters(No mask). (Please choose what you need,thank you)