Polarized Photochromic Sunglasses for Man Aluminum Magnesium Frame Top Lens Driving Day and Night Vision Goggles Sun Glasses

Product Introduction：
The intelligent color-changing feature provides good light-transmittance and clear vision.
Principles of discoloration: In ultraviolet light, the radiation will cause a chemical reaction that changes the lenses uniformly.
Description：
Introducing the NO. 1 Sunglasses in the world!
Perfect for all kinds of active lifestyles: Golf, Fishing, Running, Cycling etc.
Photochromic Polarized Glasses are the only pair you'll ever need!
✅Photochromic & Polarised Lenses
✅UV 400 protection
✅Extremely durable
✅Aluminum & Magnesium Alloy
Material:Alloy
Color: AS shown
Size:free size
Style:Casual
UV 400 Protection: The sunglasses block all three ranges of ultraviolet radiation: UVA, UVB and UVC and protect the human eye 100% from harmful effects of the sun rays.
Photochromic Polarized lenses: The lenses reduce irritating reflections and glare caused by light reflected from surfaces such as water, road, sand or snow. They absorb 100% of UV light and eliminate 99% glare light.
Note：
Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully.
Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not reflect the actual color of the item. Thanksfor your understanding.
Package includes:
1 Pcs Sunglasses

The revolutionary new sunglasses with built-in Photochromic  Technology. These unique lenses respond to changing lighting conditions almost instantly! Lenses automatically darken on bright light and lighten on low light. This effect is achieved by the photochromic lenses in our glasses.

Main Features :
1.UV400 PROTECTION
Our sunglasses block all three ranges of ultraviolet radiation: UVA, UVB and UVC and protect the human eye 100% from harmful effects of the sun rays. This is achieved by a multi-layer lens design for optimal eye protection.

2.POLARIZED
While most glasses only offer UV-A and UV-B protection, we go the extra mile by also polarizing our lenses. Polarization helps reduce strain on your eyes, increases visual comfort and more importantly, it dramatically increases visual clarity by reducing glare. In addition to all this, you can experience the world in brilliant colors and with more contrast than ever before!

Discoloration Principle
This glasses lens is contain discoloration factor, it will occur chemical reaction under the ultraviolet radiation.
When the sun changes strongly, the lens color will be dark gradually and it will absorb ultraviolet rays at the same time.
But when their is no sun light , the glasses lens will be back to original color.

3.Lightweight
Our frames are made of Aluminum and Magnesium which are known for their extreme strength while being lightweight.