maximum optical performance in a frameless design - the dragon pxv goggle. the dragon pxv goggle takes optical quality to a whole new level. dragon's panotechâ„¢ lens system features a unique curvature that allows it to wrap around the frame more, for an expanded field of view in a visually appealing design. the combination with optimised dragon lumalens® lenses sets a new standard for what a goggle can do.lumalens® silver ionizedlumalens® technology provides optimised colour and glare protection through an ionised lens coating. the hard coating is scratch resistant and repels dirt, dust, oil and water.transmittance of visible light: 23 %bonus lens lumalens® yellowthe yellow lens offers perfect protection in poor visibility. reduces glare, increases contrast and prevents premature eye fatigue in overcast conditions.transmittance of visible light: 72 %