The Sylas sunglasses from Oakley have Prizm Sapphire Polarized lenses. These glasses are a classic and reliable model. They are suitable for everyday use. The O Matter frame is light, durable, and reliable. These glasses are compatible with a cap, and fit perfectly. The Prizm optical lenses offer unprecedented light transmission control. The colours are precisely adjusted to enhance contrasts and improve visibility.With style, comfort and optical protection, you'll never want to take the Sylas off once you've put them on.