Varioflex is a lens technology which allows glasses to adapt to the weather conditions. The self-tinting photochromic lenses react to UV light, which causes chemical components within them to turn towards the source, producing a shading effect. When the UV light source diminishes, the lenses become lighter again. The process takes place in a matter of seconds, giving you glasses that are always adjusted to the changing light conditions.
A curved lens combined with indirect air flow ensures draft-free enjoyment of high-speed outdoor sports with fog-free vision.
2 Component Design
The combination of hard frame, soft rubberised arm tips and nose pads enhances the fit and comfort of the glasses.
Fogstop is a coating applied to the inside of the lens. It is not smooth but rough – seen through a microscope it looks quite fissured. This makes it impossible for moisture droplets to form a covering layer, i.e. to mist up the lens, impairing visibility. This could only occur if the humidity level was such that all the fissures are filled with water. But before this can happen, the stored moisture actually condenses, keeping the lens clear.
The articulated arms allow the glasses to be tipped away from the forehead during strenuous ascents and tilted back to reduce draft on the way down. For performance with clear vision at all times.