Wrap around style that holds tight with high performance polycarbonate lens that are lightweight and shatter resistant. And thanks to the inlaid, non slip Thermogripreg temples and nose pads, they stay on whether you compete for pay or play. The Bolle high strength Thermogripreg rubber temples and nose pads provide firm, comfortable adhesion. High performance polycarbonate lens that are super lightweight, premium grade plastic resin which are 20 times more impact resistant than glass, and a third of the weight. The polarized lens provides an optically precise filter embedded into the lens which eliminates most glare and reflected light. The Active Cell Technology works at the molecular level, quickly responding to changing light conditions to give you the best eye protection and performance. This all purpose lens is a neutral gray that allows the ideal light transmission while fighting glare on cloudy and sunny days. Approximate percentage of visible light transmission 26% 12%.