Classic style sunglasses are as stylish now as they were in the 50s. Features hand polished tortoise and gold color frames, comfortable adjustable nose pads, and triple barrel hinges. Photochromic lenses react automatically to UV rays allowing you to wear them from dawn to dusk. In the sunlight they darken to a comfortable medium brown tint and when you go inside, they lighten up. Because lenses react to UV light and not visible light, the windshield in your car will keep the lenses from darkening. Lenses darken to a medium tint in direct sunlight. Measures 46mm tall, 125mm wide, and 142mm long.