FRAME FEATURES: OX8163 Centerboard eyeglass frames feature a round, satin silver 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. MICROBAG AND CLEANING CLOTH INCLUDED: Microbag storage and cleaning cloth included to clean and store your Oakley eyeglass frames. 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. LIMITED WARRANTY INCLUDED: Oakley eyewear sold by authorized sellers, like Amazon, are eligible for all manufacturer warranties and guarantee.