Ergonomically designed temples fit the contour of your head for a comfortable, secure, non-slip fit. Flexible, lightweight frame (20 grams). Extended lens coverage for great protection and style. Distortion-free wraparound polycarbonate lens offers superior peripheral vision and protection. Wider frame design allows for broader facial fit. Anti-static and anti-fog lens. Blocks up to 99.9% of UVA and UVB rays. Meets ANSI Z87.1 standard.