The K3 La Vuelta - Los Machucos are an ode to the best climbers, capable of offering the best benefits on the most demanding terrains. They have a Special TAC 1.2mm photochromic polarized interchangeable panoramic lens with anti-fog layer and REVO cover. DrySky anti-fog system. Extremely flexible and resistant PC frame. Maximum lightness: they only weigh 27g! Includes limited edition La Vuelta 19 packaging, polyurethane case, microfiber bag and replacement pieces for nose pad and temple. Our photochromic lens is particularly sensitive to different light changes, adapting to the light conditions of each moment in an extremely efficient way. Ideal for cloudy and clear days and also for environments and terrains in which sunny and shadowy zones alternate. The K3 PhotoChromic lens controls the transmission of light independently, going from Category 2 (42% light transmission) to Category 3 (11% light transmission) in less than sixty seconds, optimizing contrast and favoring visibility.

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