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CATEGORY 4 LENSES

Category 4 lenses for high mountains and mountaineering  [/caption] Category 4 lenses are technical lenses recommended for use in the high mountains for hiking and mountaineering, they are particularly suitable for use on a glacier where there is strong snow glare, it is the monochromatic white of Ice can be very annoying if you are not using an ID lensoneto. Furthermore, the category 4 lens can also be used outside strictly mountain environments for very intense light conditions, and for subjects who are particularly sensitive to light. For which sports can you use category 4 lenses:  Hiking and Mountaineering: As previously described, the category 4 lens was created as a lens for use in the mountains for hiking and mountaineering. The particular constructionone of the lens is aimed at best protecting the eye from all UV-A and UV-B rays which become much more intense with increasing altitude, due to less shielding by the atmosphere. For the same factor, the sun's rays and the intensity of the light are also greater, and the lens category presents itself as the best performing to protect and guarantee the eye the constant sensation ofone relaxing even with very prolonged use. The most extreme mountaineering expeditions require the utmost technology for every equipment necessary for the climb. For protectionone of the eyes generally choose the category 4 lens or the photochromic lens 2-4 (which reaches category 4 once a threshold of light and UV intensity is exceeded) because if adequate filters are not used there is a risk of severe eye irritation which could lead to interrupting the shipment.one. It is also important to specify that once a certain altitude is exceeded, the snow mask is used rather than protectionone from light, to protect a greater surface area of ​​the face from the cold to prevent frostbite. (Refers torimgoing to extreme expeditions such as Everest, K2 and very high altitude peaks). Category 4 lenses for high mountains and mountaineering Category 4 lenses for high mountains and mountaineering[/caption] Paragliding, hang gliding and flying sports: Although they are disciplines very distant from hiking and mountaineering, flying sports also reach very high altitudes. For the same reasonone described for hiking and mountaineering (very high UV and light intensity) also for paragliding, hang gliding and flying sports it may be useful to use a category 4 lens for protection.one of your own eyes, specialmind if the discipline requires prolonged or very prolonged use. It is important to use id filtersonei to prevent the glare of the light and lacrimazione of your eyes which could compromise your safety during your favorite activity. Category 4 lenses for paragliding and hang gliding For all peopleone photosensitive: For all peopleone who suffer particularly from light, choosing the category 4 lens may be the solutionone to best protect your eyes on all occasions, even outside the purely sporting context. For example, this type of lens can be chosen for a trip to the seaside, where the UV and light in general is very strong and you can often find yourself with irritated eyes at the end of the day. With an id filteroneor how the category 4 lens will be resolved by effectively contrasting light and UV. Lens Materials and Characteristics: Category 4 lenses are made of polycarbonaterimanti-breakage quality. They represent safety in the event of accidental impacts, in fact the lens, even in the event of very strong impacts, does not generate fragments that could damage the eye but distributes the impact over the entire surface which forms the spiderweb effect without fragments becoming invalid. The category 4 lenses for the type of glasses on which they are mounted are equipped with anti-fog treatment which combats fogging even in the case of ventilation.one very poor. The lens is decentralized and optically perfect. In fact, the visual depth and distance of the points are faithful and without any distortionone. Is critical specialement in the mountaineering field to prevent errors that could lead to falls or incorrect processes. CLICK HERE FOR THE COLLECTIONONE COMPLETE WITH SPORTS GLASSES DEMON WITH CATEGORY 4 LENSES
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