Photochromic Sunglasses Color: White frame Lens color: Clear photochromic Made of resin Photochromic lenses that change color with the amount of UV light. Changes from clear to gray. For reference, the fourth photo shows partial photochromic activation using a tester. Clear photochromic lenses are excellent, allowing you to use them in various conditions, from bad weather and nighttime to daytime. I don't think you'll find this spec at this price point. Ideal for sports like road biking, as well as outdoor leisure, golf, and driving. Eyeglasses, glasses, sunglasses, progressive lenses, intermediate lenses, bifocals, reading glasses, fashion glasses, sea fishing, rock fishing, stream fishing, golf, driving, UV protection, cycling, road bike, running, jogging, walking, photochromic lenses, polarized lenses, photochromic sunglasses, polarized sunglasses, Wellington, Boston, road bike, cross bike, mountain bike, MTB, cyclocross, gravel road, cycling wear, cycling jersey, cycling accessories, sportswear, 100%, 100% (brand), Rudy Project, clear photochromic sunglasses Uses/Features: Mountain bike, race bike, road bike, cycling jersey, other Type: Sunglasses Gender: Unisex Genre: Road bike