UvCheap Price 1glasses Dollar Vintage Type Plastic Frame UV400 Blue Color Mirrored Lens Sunglasses

• What Does ANSI Z87.1 Mean? - Safety Glasses

  2020-11-19 · Camilo, UV400 is a specific filter or lens coating applied to boost the UV protection of sunglasses. It implies, and it supposed to mean, that the lens blocks all light up to 400nm (nanometers). This isn’t always the case, however.

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