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1.Light material, soft texture, comfortable to wear. Comes with filter valves, smooth breathable.
2.Built-in exhalation valve lets air in and keeps moisture out, letting you breathe easier while keeping dust and other pollutants out.
3. Comfortable ear bands, you can wear masks for long time.
4.It is suitable for cycling, running, biking, hiking, skiing, woodworking and other outdoor activities.
5.The dust-proof mask can be used for anti-dust, anti-vehicle exhaust, anti-pollen allergy, anti PM2.5 and haze.
6.Folding masks, you can put it inside your pocket and bring it anywhere.
The shape of the breathing valve is random (round, square).
1/5/10/20 x Face Masks