• Contrast-enhancing lens • Extra-wide field of vision for an optimal all-round view due to the curved lens • Doesn't fog up due to Fogstop coating on the inside of the lens • Ideally ventilated inside • 100% UV-A, B and C protection • All Alpina lenses provide 100% UV-A-, -B-, -C-protection and thus guarantee excellent eye protection. • Airframe venting is an intelligent ventilation system for ski goggles. Air vents at the sides and bottom with special foam covers allow a continuous movement of air within the body of the goggles. This circulation of air disperses moisture preventing the lens from misting up. • With Doublelens Thermoblock, an air chamber is created between the two lenses to prevent a cold bridge. As a result, the view is fog-free and always optimal. • All Alpina ski goggles have a Fogstop coating. This is not smooth but rough - on a microscopic level. This prevents moisture from forming a closed layer. So the lens doesn’t fog up and the view remains clear. • Mirror is a lens on which multiple reflective layers are applied. They provide protection from harsh glares and infrared light. Mirror is not only the feature of a highly functional lens, it’s an element of style. • Over the Glasses are designated as the glasses you can wear over normal vision aids. They are designed to allow enough room inside and space on the sides for a glasses frame. • Glasses with polarised technology have polarising lenses. This means they filter light and only let direct rays of sun through. As a result, distracting reflections and glares are blocked and do not reach the eyes. This makes these glasses an outstanding choice for types of sport in and on the water. • Quattroflex is the term for a specially coloured lens in ruby red, which reduces the proportion of blue in visible light. This increases contrasts in the snow, allowing surroundings to be perceived better and more quickly. Thanks to the lens’s brightening effect, the contours and textures of the piste can be perceived better even in poor weather conditions. A polarisation film of highest optical quality built into the lens completes the Quattroflex effect: • • Distracting scattered light and glares are filtered out and the contrast is also enhanced. Reflections and mirroring are minimised, which allows icy surfaces and dangerous situations to be seen much better. • Skid Grip is a special rubber coating on the inside of the eyewear strap. They prevent the ski goggles from slipping on the mostly smooth surface of the ski helmet. • With a Venting frame, openings are integrated in the frame to ensure outstanding ventilation of the interior. This prevents the lenses from fogging. The air flow is indirect so that there is no draught on the eyes.Cylindrical lenses allow a flat, straight-line goggle construction. Compared to a spherical lens, the distance to the eyes is smaller. Thermoblock and Fogstop effectively prevent icing or fogging of the glasses and ensure a clear view.