140Photochromic lenses are adaptive lenses that quickly react to ex-posure to direct sunlight. Lenses darken when exposed to light of suffi ciently high frequency, most commonly UV light. They return to their clear state when the activating light is absent. These lenses are excellent for bikers and runners, who often fi nd themselves at the mercy of changing light conditions.ACCESSORIESPHOTOCHROMIC LENSESPerfect for bikers and runners who frequently face changing light conditions.Unisex Sunglasses
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