Oakley Cathode Optical Frame delivers a square, geometric silhouette with prescription-ready construction, suited for everyday wear and clear vision needs. Key attributes: Black | Metal | Prescription-ready | Rust-resistant | Full-rim frame | Metal temples | Square geometric frame | Full-rim silhouette | Dimensions & fit: Lens width: 54 mm | Bridge: 18 mm | Lens height: 37 mm | Temple length: 138 mm | Frame width: 126 mm | Size: M | Composition & care: Metal | Spot or wipe clean.