Cycling Face Bandanas, with 2 Breathing valve for Adults, Haze Dust Face Health Protection (2pcs, A)

【Cycling Dust Mask】This mask designed with unique breath system for better personal protection. Outer mesh mask shell enhance breathability plus inner replaceable filter, which can blocks pollution like: exhaust fume, smog, pollen, dust etc.
【Five Layers of Filter Structure】Breathing face mask include one filter, which has 5 layers provide professional filtration. The first layer blocks large particles, the second activated carbon filter layer filter benzene, car exhaust. The third and fourth layer filter 0.03-0.3 microns of dust and particles. The fifth non-woven layer comfortable and breathable.
【Reduce Overheating & Fogging】 Dual one-way Breathing valves allow exhaustion of heat and carbon dioxide easily, provide smooth breathing, prevent fogging and overheating exceptionally well. Designed with neoprene structure, makes it well-ventilated, breathable and quick drying. Useful for those who need to wear the mask for hours at a time. Please replace the filter every 25-30 hours if the mask is used extensively in heavy dusty operations, such as grain bins, construction/demolition, etc.

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The shell can be washed when they get dirty and the filters are replaceable.
This item can be used to protect you from harmful dust particles, PM2.5, vehicle exhaust, woodwork, and fumes. living in or travelling to areas with high air pollution / smoke levels.