An oversized design for an over stylish look, Serengeti's new feminine model Agata attracts attention with its glamourous shape evoking the looks of famous actresses of old American movies. It is made of Nylon TR90 which makes it durable, extremely flexible, exceptionally light and comfortable.Nylon TR90Using only the highest-quality injected Nylon TR90 for superior durability, these fashionable frames have the added benefit of being exceptionally light, chemically resistant, and extremely flexible and comfortable. Ultra-Light Mineral LensA full 20% thinner and lighter, Serengeti’s Borosilicate mineral glass lenses are finer than any other lens. Produced in the same process normally reserved for ophthalmic-quality corrective lenses, they also provide the best visual optics in the industry. Each photochromic lens passes through a Hydrogen-fuelled Lehr furnace, which fuses each lens with the Spectral Control technology - with varying temperatures that determine the proprietary lens hue.555nm Lens555 nanometers marks the center of light’s visible color spectrum, right on the border of yellow and green. This is where the human eye sees best. In low light conditions, this lens allows more yellow and green to pass through, creating relaxing conditions for the eyes, while the light silver metallized mirror coating (available only on mineral lens) reflects glare. Very bright light conditions. The non-polarized lens is ideal for Driving and Everyday use and the polarized one is ideal for boating activities.Spectral Control TechnologySerengeti Spectral Control technology fine-tunes the light waves passing through the lens, for a highly reduced blue light transmission, naturally enhanced detail and colors that pop, crisp and clear.Polarization TechnologyWhether you’re in a high- or low-glare environment, you deserve lenses that give you the ultimate glare protection and with it, uncompromising clarity. Serengeti’s Polarizing technology suppresses glare and sets your eyes free, releasing them to enjoy all the depth and beauty the world has to offer.Photochromic TechnologyWhether crossing sun-scorched desert valleys or winding mountain roads, Serengeti lenses perfectly adapt to changing light conditions.