Classic form, best function The Oakley Sylas are classic sunglasses with reliable features. This new model convinces with improved functions in everyday life, such as a design that is compatible with headgear. It also comes with a lightweight O Matter™ frame and is equipped with Prizm™ lens technology. PRIZM™ Prizm™ is a revolution in lens optics built on decades of colour science research. Prizm™ lenses offer unprecedented control over light transmission, allowing colours to be fine-tuned to maximise contrast and improve visibility. FeaturesThe eyewear design is compatible with headwearExtended field of view for greater all-round visibilityThree-Point Fit System Lightweight O Matter™ frame material