great performance at an unbeatable price. the park has a robust tpu frame for high wear and abrasion resistance. 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 up. the free°d technology corrects light refractions, thereby preventing optical distortions.green/green lensthis cylindrical lens is ideal for changing and variable conditions.