Oakley BAT FLIP OX8183 818303 is a sport-performance optical frame featuring a sculpted silhouette and a twisted stem design inspired by a baseball bat swing. It combines a lightweight construction with no-slip contact points for secure, all-day wear. Key attributes: Matte transparent blue | O Matter | Lightweight frame for all-day wear | No-slip grip when wet | Sport performance design | Ace-Fit adjustable temples | Unobtainium nosepads and earsocks for secure retention | Full-rim construction | Twisted stem design | Square/rectangular silhouette | Sculpted full-rim frame | Dimensions & fit: 56-18-148 mm (lens-bridge-temple) | 58-18-148 mm (lens-bridge-temple) | Height: 39 mm (56), 41 mm (58) | Regular fit | High bridge fit | Available sizes: 56 mm and 58 mm lens widths | Composition & care: O Matter (nylon frame) | Unobtainium (nosepads and earsocks)