Anti dust mask is shock-proof, can help u keep out the bridge of your nose the following part with plastic sheet fixed according to the person face design.With unique ventilation design, a plurality of holes, excellent permeability, exhale, the valve of work out mask is opened without resistance, double air breathing valve, air resistance is smaller, smooth breathing.The cool dust mask is suitable for cycling, hiking, skiing and other outdoor activities, also can be used as haze day protection, anti-dust and so on.
