1 mirror frame legs made of high strength alloy whole compressive deformation resistance.
2 using the third generation TAC HD lens Polaroid polarizing lens wearing not explosion-proof dizzy polarized lenses real ~
3 the lens explosion-proof effect: ordinary lens rupture will cut the skin and even other glasses were injured. Absolute explosion protection.
4 the overall frame does not press the face wearing comfortable. Mirror legs angle moderate normal wear does not fall.