This sports mask provides professional protection using 5 layers of filtration. This dust mask effectively filters out 95% of exhaust, dust, pollen, particles, smoke and fumes. It is suitable for mowing, running, cycling, skiing, hunting, travelling, climbing and other outdoor activities. Easy Breathing design incorporates double breathable valves and a soft, mesh material design which increase comfort, reduces heat, and reduces moisture in hot weather. Made of Nylon mesh for excellent breathability and extra comfort. Lightweight material allows you to wear it all day and allows your skin to breathe in hot and humid conditions. Dust mask uses replaceable activated carbon filters. The filters are easy to replace and the mask mesh and valves are washable when they get dirty. The valves export heat and moisture away from your face keeping you cool for longer periods of time. The adjustable nose clip and velcro band allow a comfortable fit. Activated carbon filter traps and filters air molecules and the adjustable nose clip helps eliminate lens fogging. Great for for cycling, running, biking, hiking, skiing, woodworking, and other outdoor activities. The Velcro design prevents slippage.