SCVCN fotokromatske biciklističke naočale za muškarce i žene UV400 biciklističke sunčane naočale za biciklizam, naočale za MTB, planinske ceste, sportove na otvorenom, planinarske naočale

Note that the product configuration is: Photochromic Glasses*1 Features: 1. Photochromic lenses have UV400 function and will change color under direct sunlight. Discoloration occurs in about 1 minute in winter and about 40 seconds in summer. Speed depends on sunlight and UV intensity! (If the UV intensity and temperature are low, the color change rate will be slower.) The color change rate is related to the UV intensity and temperature.