These filters also optimize true colors, giving you a clearer view of the world around you no matter how bright or hazy it gets. Polarized lenses are a great choice for skiers, drivers and people who enjoy water sports. There are no right or wrong answers when it comes to choosing the right lens shape. But there are a few general rules that can help if you don't know where to start. Oval faces look good in just about any lens shape.
Square faces have high temples, and look good with rounded lenses to soften shape contours.
Round faces are complimented by square frames, which lengthen and slim down the face lines. Lenses that wrap around your face block more of the light hitting your eyes from the side, and they also improve aerodynamics, cutting down on wind that can dry your eyes out. Wrap-around lenses also provide extra protection against rain, pebbles, sand and so on. Frame material Metal frames are easy to adjust to your specific face and head shape. Acetate is a form of plastic very similar to nylon in weight, feel and function.