FRAME FEATURES: OX8164 Port Bow eyeglass frames are made with durable and lightweight O-Matter material. They feature a rectangular, polished clear frame with adjustable Ace-Fit temples for a secure and personalized fit. 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: Microbag storage and cleaning cloth included to clean and store your Oakley Eyeglass frames. VISIT THE OAKLEY BRAND SHOP: Click on the Oakley link above the product title to shop the entire Oakley sunglass and eyeglass assortment. 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. 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.