Stay covered with sporty style and full-on features of the Sentry. Injection molded Grilamid nylon frames are lightweight and durable. Suncloud frames and lenses feature an 8-base curvature, enabling the frame and lens to wrap on the wearer's face. Eight base frames offer added protection from both the annoying side glare and environmental elements such as wind, dust and particulate matter. Suncloud Optics polarized lens eliminates glare for superior visual clarity, definition, color transmission, and optical comfort. The polarized lens offers the truest transmission of natural colors. Offers 100% UV protection from the sun's harmful rays.