Extended wrap-around lens for extra cheek and extra side coverage (up to 20% more). New Rx lens insert holds Rx lenses firmly in place. Soft, flexible nose fingers conform to fit a variety of nasal profiles. Adjustable temples for custom fit. Wide variety of replacement lens options. Passes ANSI Z87+ and CSA Z94.3 standards. Features UVex HydroShield Anti-Fog Coating Technology. Provides 99.9% UV protection.