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
Size :One Size Fit Most People
Unique ventilation design, a plurality of holes, excellent permeability,the valve is opened without resistance,double air breathing valve, air resistance is smaller,smooth breathing
Suitable for running, cycling, hiking, skiing and other outdoor activities,it also can be used haze day protection, anti-dust and so on