Oakley Sylas is a classic frame with reliable features. Feel secure in this new style that goes above and beyond the standard with upgraded features for all-day wear, including a hat compatible design, lightweight frame and PrizmLens Technology. Hat compatible frame and temple design with an increased extended periphery Available with Prizmlenses that are designed to enhance color, contrast and detail to make the most of any activity Three-point Fit is designed for comfort and to hold your eyewear in precise optical alignment Lightweight O Matterframe material provides durability and all-day comfort Fit: Standard