Fits all goggles using Vents lens system (Empire E-Flex, E-Vent, Avatar, Helix) are certified Empire single pane lens. Lens design has zero optical distortion, for clear viewing at all angles. Rapid, tool-free lens replacement. Comes with 10 replacement lens. Features: Single pane construction reduces fogging Lens design has zero optical distortion, for clear viewing at all angles Rapid, tool-free lens replacement Blocks UV radiation