Oakley HSTN Sunglasses combine Oakley performance with a round, contemporary frame. The design emphasizes contrast-enhancing Prizm lenses and everyday wearability. Key attributes: Brown | Tartaruga | O Matter | Prizm lens technology | Available with Prizm and Prizm Polarized lens options | UV protection | Lightweight frame | Medium-size fit | Round frame | Modernized trigger stem influenced by Oakley Razor Blades | Dimensions & fit: 52 - 21 (lens width - bridge) | Regular fit | Medium size (52) | Composition & care: O Matter frame | Wipe lenses with a microfiber cloth. Hand wash frame with mild soap and water; dry with a soft cloth. Store in protective pouch when not in use.