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: hat compatible frame and temple design with an increased extended peripherySEE MORE DETAILS: Available with Prizmlenses that are designed to enhance color, contrast and detail to make the most of any activityFIT: Three-point Fit is designed for comfort and to hold your eyewear in precise optical alignmentLIGHTWEIGHT: Lightweight O Matterframe material provides durability and all-day comfortPRESCRIPTION: Available with Oakley Authentic Prescription lenses for athletes of all levels with RX needs PRIZM BLACK POLARIZED Light Transmission: 11% Light Conditions: Bright Light Contrast: Increased Base Lens Color: Black