Oakley GB Correspondent Sunglasses, Gretchen Bleiler signature series correspondent sunglasses, Filter category 3 lenses, Optimized peripheral vision & side protection of 6 base lens curvature, Optical precision & impact resistance meet or exceed Z87.1 optical & basic impact standards, UV protection of PLUTONITE® lens material that filters out 100% of UVA/ UVB/ UVC & harmful blue light up to 400nm, Durability & all-day comfort of lightweight, stress-resistant O MATTER® frame material, Comfort & performance of Three-Point Fit that holds lenses in precise optical alignment, Patented hydrophilic UNOBTAINIUM® nose pads ensure a snug, secure fit, Metal icon & band accents, Convenience & styling of exclusive women’s eyewear case (included), A stylish piece for the jet set, correspondent is a thoroughly modern take on the classic highbrow frame. They’re part action sports athlete, part old school reporter, & all girl. Correspondent knows how to tell a story in style. The grey lenses are for medium to bright light & have a light transmission rate of 18%. Excellent all-purpose lens offering truer color perception in sunny conditions.