Polarized Photochromic Oakley Flak Jacket XLJ Replacement Lenses. Transform the look of your sunglasses with a brand-new set of high-quality replacement lenses from Seek Optics. You can keep your look while cutting your expenses. Seek Optics offers new sunglass lenses that can be used as replacements for your favorite frame at a price that is a fraction of the cost of purchasing new sunglasses. Seek Optics Replacement Lenses are guaranteed to fit your sunglasses. They are Durable, Impact-Resistant, provide 100% UV Protection and offer Optimal HD Clarity while also Reducing Glare. Our lenses are made in durable Heavy-duty, Scratch-Resistant and Impact-Resistant materials. Your Safety comes first: all lenses include: UV400, Polarized Anti-Glare and Improved Clarity with special coating to repel water, oil, and dust. PLEASE NOTE - Lens Care: Please avoid salt water, sea water, pool water and soapy water. Do not use chlorine or alcohol-based cleaners. Take care to clean with clear water and a soft microfiber cloth.