·Polarized lenses reduce 99% of visible glare for increased sharpness and decreased eye fatigue·Lightweight and virtually shatterproof,injection-molded polycarbonate lenses are 20 times more impact resistant than glass and one-third the weight·Grilamid® lightweight nylon frames offer consistent fit and flexibility in all temperatures and are extremely impact resistant·8-base-curve lenses; (the higher the number the more curved the lens™SunCloud sunglasses have 6,7,8 and 9 base curvature)------------------------ Imported.