Reusable and Washable Dust Face Mouth Covering for Men and Women with 6 Active Carbon Filters and 4 Breathing Valve

Our dust face covering are ideal for woodworking, lawn mowing, running, cycling, and other outdoor activities. Mesh nylon maximizes breathability and 5-layers filter removes dust and other non-oil particles. Active carbon filters isolate 99-percent of dust, chemicals, fumes and particulates. The two one-way breathing valves design bring excellent permeability, air resistance is smaller, smooth breathing. Nylon material is very soft and comfortable, light, fast drying, breathable. Velcro design makes the size can be adjusted to meet the most head type. How to replaced the filter: 1.Open the face covering to expose the interior of the filter valve. 2.According to the OPEN directions on the valve,turn the valve counter(clockwise), to separate the valve. 3.Remove the filter. 4.Replace the new filter, reverse the above steps, clockwise rotation of the valve.