Anti-Dust Half Face Mask,Filtration Exhaust Gas Anti Pollution Mask, Motorcycle Mesh Cover Dust Mask Half Face Bike Mask with Extra One Dust Mask Filter for Outdoor Activities(Blue) IMPORTANT FOR OUR LIFE - Active carbon filters isolate 95-percent of dust, chemicals, fumes and particulates,especially for those who in pollen allergy have a significant role SUITABLE FOR MOST PEOPLE - The perfect combination of ergonomics, size can be adjusted to meet the most head type.According to the person face design, keep out the bridge of the nose the following part, have aluminum sheet fixed, to prevent the slide WONDERFUL DESIGN - Unique ventilation design, a plurality of holes, excellent permeability, Exhale,the valve is opened without resistance,double air breathing valve, air resistance is smaller,smooth breathing WHO NEED IT - Suitable for running, cycling, hiking, skiing and other outdoor activities,it also can be used haze day protection, anti-dust and so on EASY CLEAN - The mask can be washed when they get dirty and the filter is replaceable.Package included : 1 x Half Face Mask(Blue Color);Lifetime Warranty7-15 days delivery date with tracking number by USPS