Replacement Integrated Over Moulded Anti Mist Anti Scratch KN Lens for EVO®VISTAlens® Helmet When fitted to the EVO®VISTAlens® Helmet this replacement lens has the following features and benefits - Optical Class 1 - High optical quality with no optical distortion K Rated - Anti-Scratch resistance to surface damage from fine particles N Rated - Anti-Mist resistance to fogging UV 2C-1.2 2: UV filter (EN170) provides protection from harmful UV. C: Unimpaired colour perception. 1.2: High light transmission.