Serengeti Sestriere Sunglasses, Polar PhD 555nm Blue

Frame that will accompany you with style and sophistication to your greatest sporting feats! Serengeti Photochromic lenses technology joins ultra-sleek and light frame to make the most of your outdoor adventures. All Serengeti lenses offer the latest in photochromic technology, which constantly lightens and darkens throughout the day to ensure you see every detail. As the pioneer of photochromic technology Serengeti leads the industry in creating lenses that adapt to any light condition in any setting. Darkening in bright sunlight and lightening in overcast conditions, photochromic technology allows your eyes to adapt to any light, in any weather. The result is a view of the world so crystal clear; you'll notice natural beauty you've never seen before. Serengeti photochromic lenses are activated by the amount of UV radiation in the atmosphere and engineered to transition from light to dark, gradually. Keeping your eyes and mind relaxed and focused on the road ahead. Energy from UV radiation causes the polarity of the silver salt lens molecules to expand in brighter conditions, creating a denser lens that absorbs more light. In darker conditions, the molecules compress and separate to allow in more light. Photochromic lenses optimize for the environment, providing your eyes with the exact amount of light needed at any time f enabling your eyes to discern shapes and colors more quickly while eliminating eyestrain.

Serengeti Spectral Control technology removes wavelengths to give better saturation of what we need to see. Much like an audio equalizer filters sound frequency, our lens fine-tunes and filters shortwave blue light, allowing more red, green, and yellow to pass through. Landscapes that would be washed out, dull, or flat with other lenses become defined, vibrant, and vivid. Traffic signs and signals appear more distinguishable f while your eyes remain cool and relaxed. Serengeti Spectral Control technology excels at diminishing atmospheric haze, filtering up to 96% of blue light to reduce blue blur and visible noise, while enhancing contrast and sharpness. Lenses selectively manage light wavelengths, distinguishing reds, greens and yellows, in any light condition. Providing improved depth perception and maximum color contrast. While some blue light (blue turquoise) regulates Serengeti biological clock, retina-harming blue-violet light is a risk factor for age-related macular degeneration (AMD). By filtering it out, Serengeti Spectral Control technology helps preserve your sight perfectly.

A headache from glare can ruin your day. With Serengeti Polarization technology, it becomes a thing of the past. When glare reflects off the road, water, snow or flat areas, parallel light rays can pass through unhindered, while distracting perpendicular light is reflected. This allows you to discover more clarity, while living free from glare and eye fatigue. When glare strikes, embedded Serengeti Polarization technology acts like a Venetian blind. While parallel light rays enter each lens, distracting perpendicular rays are reflected. Serengeti polarized lenses relieve eye fatigue and impeded vision by eliminating disruptive glare from: vehicle headlights, intense lights, shiny surface reflections and the everyday outdoors. This polarization technology allows you to experience absolute clarity, while discovering layer upon layer of details that glare would have otherwise kept hidden.

Grinding with diamond wheels. Microscopically infusing technology. 1000 Degree C (1832 Degree F) temperature. If there's a way to make their lenses more optically advanced, Serengeti will find it. 555 nanometers mark the center of light's visible color spectrum, right on the border of yellow and green. This is where the human eye sees best. That's why Serengeti 555nm lens was created specifically for optimal sight in bright climates. In low light conditions, this lens allows more yellow and green to pass through, creating relaxing conditions for the eyes. Because the brain can recognize these two colors most easily, yellow is widely used on caution signs while green on black are used on radar screens, night vision devices, LED displays, and DVD players. Very bright light conditions - ocean, driving and every day. As a beautiful variation of the 555nm, the 555nm Blue features a reflective blue dielectric mirror coating, which offers a category 2 to 3 555nm lens protection that reflects more glare and improves contrast.

Trivex lenses are composed of a urethane-based monomer and are made from a cast molding process similar to how regular plastic lenses are made. This gives Trivex lenses the advantage of crisper optics than injection-molded polycarbonate lenses (PC Abbe number: 29-31 vs Trivex Abbe number: 43-45). In addition, Serengeti lens features benefits like a lower temperature sensitivity for high photochromic performance in any climate, which allows the lenses to darken faster and deeper in hotter environments. Serengeti also added a renewable backside anti-fog treatment to prevent fog on the lenses, like you experience when exiting a car's air conditioning.

Each lens is built with NXT technology and made from Trivex material, which was designed to withstand extreme impact and temperature changes. Lighter than polycarbonate, Trivex offers higher optical clarity and the perfect balance of visual and physical performance. The PhD 2.0 next generation lenses still feature hydro and oleophobic front-side coatings, which help repel water, fingerprints, and debris. While a new highly durable backside anti-fog treatment enables perfect vision and better performance, whatever the activity. Sunglasses are a small medium fit design, has Megol temple tips and nose pads with a lens dimensions of 2.4" x 1.46" x 2.52" (61mm x 37mm x 64mm), 0.67" (17mm) DBL, a temple length of 5.24" (133mm) and a lens curve of 8 Rx. Sunglasses come with a protective case for transport and storage.