Wholesale Unigear Reusable Activated Carbon Dust/Dustproof Face Mask

-Covering with premium Nylon, offering excellent permeability, soft texture, quick-drying, breathable and comfortable to wear -Double air breathing valve, air resistance is small, smooth breathing -Coming with active carbon filters which anti PM2.5 and haze day protection, can separate 98% of the dust, chemicals, particulates, gas, pollen -Adjustable nose clip, size can be adjusted to meet the most head type -The neoprene dust mask shell and valves can be washed when they get dirty, the N99 filter is replaceable -Care: Remove the breathing valve and filter before washing. In order not to damage the mask, we recommend not using alkaline detergent to clean the mask. It is best to replace the filter every three days.