Oakley Sylas OO9448 Prizm Grey Sunglasses go above and beyond the standard with upgraded features for all-day wear, including a hat-compatible design and Prizm Lens Technology. These sports sunglasses feature High Definition Optics (HDO) that meet or exceed American National Standards Institute testing for optical clarity, visual fidelity, and impact resistance. Lightweight Plutonite lenses filter 100% of all UVA/UVB/UVC and harmful blue light. The lenses feature Prizm technology that helps fine-tune your vision for specific sports and environments by maximizing contrast and enhancing visibility; part of the Prizm Grey family, the Prizm Sapphire lenses have a light transmission value of 12% and give a more natural appearance to colors, increasing detail for a more optimized everyday experience. These Prizm sunglasses have O Matter frames that are lightweight and stress-resistant, with a distinctive keyhole nose bridge and a hat-compatible, wraparound style that won't get in the way of your hat's curved bill. Like all Oakley sunglasses, the Sylas boasts a Three-Point Fit that holds the lenses in precise optical alignment while eliminating pressure points. These Oakley Sylas sunglasses come with a soft, microfiber bag that doubles as a cleaning cloth. Manufacturer style #: OO9448. Plutonite polycarbonate lenses filter 100% of all UVA/UVB/UVC and harmful blue light Prizm lenses for ultra-precise color tuning in any environment High Definition Optics meet standards for clarity and impact resistance Lightweight O Matter frames with keyhole nose bridge Hat-compatible design won't bump up against your hat's curved bill Three-Point Fit holds lenses in precise alignment and provides a comfortable fit