Ray-ban rb3708 chromance sunglasses are the ultimate accessory. The metal square frame, with its sharp angles and edges, gives this style an unmistakable modern look. The black color is paired with grey polarized lenses for a cool and sophisticated appearance that exudes confidence. With chromance lens treatment, these shades are perfect for those who want to make a statement without being too flashy. Available with lens contrast enhancement technology. - frame material: metal