Achieve peak performance while elevating your style in oakley flak® 2. 0 xl sunglasses. The polished black o matter frame, paired with prizm golf lenses, offers a superior optical experience by optimizing visual clarity and contrast for the best possible performance on the golf course. These rectangle-shaped shades feature a unique design that optimizes airflow, keeping your eyes cool and comfortable during intense activity. With its advanced technology and sleek design, oakley flak® 2. 0 xl are engineered to enhance your efficiency on the green as well as off it. Available with prescription lenses.