Oakley HSTN Sunglasses pair a lightweight O Matter frame with a modern round silhouette and geometric temples for a bold, everyday urban accessory. Key attributes: Gray | Grey | O Matter | Lightweight frame | Durable construction | All-day comfort | Enhanced color and contrast with Prizm lenses | Unobtainium nosepads for improved grip | Prescription ready | Round silhouette | Pronounced brow line | Geometric temples | Modernized trigger stem | Dimensions & fit: Lens width: 52 mm | Medium size (lens width 52 mm) | Composition & care: O Matter frame | Unobtainium nosepads | Prizm lens | Clean lenses with a soft microfiber cloth. Avoid harsh chemicals and abrasive materials. Store in a protective case when not in use.