Oakley Field Day Optical Frame offers lightweight, durable everyday eyewear designed for secure, all-day comfort. Key attributes: Black | O-Matter | Lightweight | Durable | All-day comfort | No-slip Unobtainium earsocks | Molded nosepads | Three-Point Fit | Includes original case and cleaning cloth | Certificate of authenticity and guarantee included | Rectangular silhouette | Dimensions & fit: Lens width: 48 mm | Lens width: 50 mm | Narrow fit | High bridge fit | Composition & care: O-Matter | Unobtainium | Clean with the included cloth and store in the original case.