larger goggles with a wider outline for a smooth style . the rush has a robust tpu frame for high wear and abrasion resistance and a larger frame with soft outlines. the innovative f°scape anti-fog technology uses tiny etched channels on the glass surface to ensure that condensed water is immediately drained away, preventing the glass from fogging. the free°d technology corrects light refractions, thereby preventing optical distortions.red/blue lensthis cylindrical lens is ideal for sunny and partly cloudy conditions.