Photochromic Day & Night Sunglasses Necklaces just put it on this

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ensuring long-term durability

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The positive-click mechanism ensures secure pattern locking during vibration or movement

Photochromic Day & Night Sunglasses Necklaces just put it on thisFEATURES Purchase Information This is a pair of photochromic glasses. When exposed to outdoor sunlight, the lenses absorb ultraviolet rays to form a protective layer that changes the color of the lenses. The stronger the UV rays, the darker the color of the protective layer. It is suitable for both daytime and nighttime driving. If you need dark lenses, please choose Yellow Dark Gray Lens PHOTOCHROMIC DESIGN Photochromic Sports Sunglasses. These