Oakley gave the lens orbitals on the Catalyst Prizm some angular attitude and let the sizing go big with personality, creating an on-trend look in lightweight O Matter that features Unobtainium icons and front curvature that's more linear to salute vintage frames. They flipped the idea of gradient frame hues, creating color fades that are darker at the bottom and lighter at the top. Each style in the Catalyst Collection is matched with Oakley's unrivaled Prizm lenses that enhance detail to help you make the most of any activity, from sports to everyday life. Prizm Lens Technology, Reverse Gradient Lens Design, Lightweight O-Matter Frame, Vintage Style with a Modern Twist, Best Use: Multisport, Lens Material: Plutonite, Frame Material: O Matter, Interchangable Lens: Yes, Face Size: Medium, Warranty: 2 Year Limited, Lens Type: Non-Mirrored, Model Year: 2018, Product ID: 557297, Frame Shape: Square, Model Number: OO9272-2555, GTIN: 0888392320681