|| You'll reach for the Smith Tenet polarized sunglasses again and again to be your main pair of sunglasses for eye protection. Polarized lenses reduce 99% of visible glare for increased sharpness and decreased eye fatigue. Lightweight Techlite(TM) lenses feature high-quality borosilicate glass that is polished and chemically tempered for increased shatter resistance. Frames feature polarized brown lenses to eliminate glare and enhance contrast while maintaining accuracy of color. Grilamid(R) TR90 lightweight nylon frames offer a consistent fit and flexibility in all temperatures and are extremely impact resistant. Frames feature spring hinges to accommodate a multitude of head sizes. Nosepiece and temple ends become tackier when wet for reliable grip during exercise and hot weather. 8-base-curve lenses; (the higher the number the more curved the lens-Smith features sunglasses with 6, 7, 8 and 9 base curvature). Best fits large profiles. Smith Tenet polarized sunglasses include a protective case.