The popular Oakley Whisker frames with Drivewear lenses. Transitions partnered with Younger Optics to offer Drivewear lenses--the first polarized photochromic to activate behind the windshield of a car. They block 100% UVA and UVB rays while blocking all incoming glare in the horizontal plane. The lenses transition from a light yellow/amber to a dark maroon, depending on the amount of sunlight. As you can see in the video, the lenses instantly start transitioning when exposed to sunlight, and a full transition takes only a few seconds (as opposed to less active eyeglasses transitions which can take up to four minutes to completely transition).
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