Why we need to wear the snow goggles

Why we need to wear the magnetic snow goggles. It is well known that skiing is a very challenging and skillful outdoor sport with certain dangers. (other outdoor activities in snowy environments also require ski goggles.) Snow blindness can occur in the snow environment where you ski, and glasses can be hurt when you fall down during high-speed sports. Good magnetic snow goggles without scratches, flat. The trick is to hold glasses on the front, to see the reflection of the person in the mirror, if the shadow is clearly rotating in different positions and not out of shape, showing the mirror is not flat. Anti-fog can be applied to inner and outer layers of magnetic snow goggles.