X8-500Classic style engineered with durability and flexibility Combining style and durability, the X8 500 is a classic look providing active adults with all day comfort. The keyhole nose bridge mixed with lightweight, stainless steel temples offer personality and style whether in the office or working from home. Mixed with the Flex Core TM Layer that absorbs shock, contoured tips and Comfort Fit nosepad, these frames stay in place and can stay with you all