Kapvoe-Photochromic Cycling Sunglasses for Men Women UV400 Outdoor Bicycle Eyewear Bike Goggles Sports Man MTB Cycling

Product configuration:【 Photochromic- 1 lens】 : Photochromic Glasses1, 1glasses cloth, 1glasses bag, 1EVA box. Notes:1.The photochromic lens has the function of UV400, which will change color under direct sunlight2.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.