Oakley Sylas SunglassesOakley® 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 Prizm™ Lens Technology. Features of the Oakley Sylas Sunglasses HAT COMPATIBLE: hat compatible frame and temple design with an increased extended periphery FIT: Three-point Fit is designed for comfort and to hold your eyewear in precise optical alignment LIGHTWEIGHT: Lightweight O Matter™ frame material provides durability and all-day comfort