oakley sylas matte black sunglasses. 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 prizmâ„¢ lens technology.prizmâ„¢ polarized features the maximized contrast and enhanced visibility of prizmâ„¢ with the glare filtering benefits of oakley hdpolarized.