Through advanced lens technology, Suncloud polarized lenses filter and eliminate horizontally reflected, visually interfering light waves known as 'glare'which results in superior visual clarity, definition, color transmission and comfort. All Suncloud lenses provide 100% protection for harmful UVA and UVB sun rays. Great for use during outdoor activities in any weather conditions. Polycarbonate material provides a great blend of impact resistance, optics, and are lightweight so you can comfortably wear them all day for your sport performance needs.