PRESCRIPTION READY EYEGLASS FRAMES: Oakley eyeglass frames feature lenses that need to be replaced with prescription lenses so you can enjoy clear vision. MICROBAG AND CLEANING CLOTH INCLUDED: Packaged in Mircobag to clean and store your Oakley eyewear. VISIT THE OAKLEY BRAND SHOP: Click on the Oakley link above the product title to shop the entire Oakley sunglass and eyeglass assortment. O MATTER STRESS-RESISTANT FRAME: Oakley's stress-resistant frame is lightweight & durable for all-day comfort & protection. The injection molded thermoplastic O-Matter frame provides improved strength & flexibility over traditional acetate & is built to withstand shifting or deforming over time. THREE POINT FIT: Comfort and performance that holds lenses in precise optical alignment. Contact only happens at the bridge of the nose and behind the temples.