FRAME FEATURES: OX8163 Centerboard eyeglass frames feature a round, satin brown Havana frame made with lightweight O-Matter and adjustable Ace-Fit temples for a secure 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. CASE AND CLEANING CLOTH INCLUDED: Packaged in a hard case to clean and store your Oakley eyewear. 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. VISIT THE OAKLEY BRAND SHOP: Click on the Oakley link above the product title to shop the entire Oakley sunglass and eyeglass assortment.