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COMPREHENSIVE PROTECTION: 5-layer filter can remove non-oil particles in air including dust, and other non-oil based particles. Ideal for Running, Training, and other Outdoor Activities
EASIER BREATHING: Two one-way discharge valves allow breathe out; The increased ventilation lets heat and moisture escape, preventing eyeglasses from fogging
REUSABLE & WASHABLE: The mesh dust Cover shell and valves can be washed when they get dirty, the filter is easy replaceable, you can replace them with another new valves and filter cotton by yourself.
CONFORTABLE DESING: New upgrades for pollution cover implements the earloop design preventing the dust cover from slipping off. Fits the bridge of the nose. Velcro straps make it easier to wear.
LONGER SERVICE LIFE: Included replacement filters sets (4 filters+4 nose pad+2 vent valves) extend service life for the dust mask; Mask is washable by hand to easily keep it clean; 1 Year Warranty provided by coher