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Notes:
1.The photochromic lens has the function of UV400, which will change color under direct sunlight
2.Discoloration occurs in about 1 minute in winter and about 40 seconds in summer.
3.The speed depends on the sunlight and UV intensity! (If the UV intensity and temperature are low, the discoloration speed will slow down.)
4.The discoloration speed is related to the UV intensity and temperature.
Usage Guarantee:
The frames and lenses are unbreakable, so you can buy them without risk. If there is any problem with our cycling sunglasses, please feel free to contact customer service to solve the problem until you are satisfied.
