Features: Mask Shell: Neoprene / Nose Clip: Coated Aluminum / Filters: Carbon Filter Helps Healthy Breathing: This air filtration mask is designed for comfortable protection against non-toxic dust, pollen, fumes, common airborne irritants and other non oil based particles. Great addition to your wood working tools and equipment. Universal Usage: Use this anti pollution mask for home improvement projects: as a paint mask (non-oil based), woodworking masks for dust protection, mask for cleaning, smoke mask, sanding mask, face mask construction workers, etc. It can also be used as mask to filter pollens. Also, our customers use the face mask for running and cycling. Improved Design: Unlike previously designed filter masks, our new half mask implements the Earloop design preventing the pollution mask from slipping off and equipped the face mask with filter and two one-way discharge valves to reduce heat build-up inside the pollution mask. Comfort: Made of elastic material, air pollution mask comes in 4 sizes and can be adjusted to meet most head types. The carbon filters and exhaust valves are fully interchangeable and reusable making last significantly longer than your average dust masks, cloth face mask or disposable masks.