Oakley flak® 2. 0 xl shades take your performance to the next level. The prizm™ polarized lenses enhances color and contrast, while optimizing clarity for a more efficient visual experience. The prizm™ deep water polarized lenses reduce glare and optimize vision in any condition, making them ideal for water sports enthusiasts. The matte grey ink frame is crafted from durable o matter™ material, known for its lightweight comfort and superior strength. These rectangle-shaped glasses offers a sleek and modern look that complements any active lifestyle. Available with prescription lenses.