Blocks UV Rays. They block blue light. They block glare. What more could you want from a pair of sunglasses? I drive for hours every day and these are always my go-to sunglasses. Incidentally, many glasses claim to block blue light and only block a percentage. They have their uses (night driving, computer glasses, etc.) but they block blue light! The blue digital display is completely invisible on them, but most colors are still visible. Green lights stay green, red lights stay red. White looks yellowish, but you get used to it and protect your eyes. Great product at a great price.
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