Photochromic sports glasses men and women outdoor sports non-slip anti-ultraviolet Safety glasses（1 pcs）

This magical photochromic lens are based on the intensity of sunlight and ultraviolet light, darkening the light grey lens. What’s more, these glasses protect the eyes without interfering with your perception of color. Plus its fashion Square design, always match your daily dressing demand(may not change obviously under weak UV lights) cycling,driving,running,fishing,climbing,trekking or other outdoor activities enthusiasts.stylish design,with rich color combinations of frames and lens.Polycarbonate lens and frames are impact,scratch resistant,durable and unbreakable. Sports Frame is Lightweight But, for Safety Eyeglasses with Wraparound Design that Provides Increased Side Protection and Peripheral Vision Lightweight frame with photochromic lenses easy reading indoor and outdoor. Note: This is not sunglasses!! The photochromic lens changes according to the intensity of ultraviolet rays. The stronger the ultraviolet rays, the deeper the discoloration, and the weaker the ultraviolet rays, the lighter the discoloration.