Oakley Wingback SQ Optical Frame pairs a lightweight titanium build with a semi-rimless square profile for everyday wear and prescription compatibility. Key attributes: Black | Titanium | Lightweight | Durable | Compatible with prescription lenses | Demo lenses installed (replaceable) | Square/rectangular shape | Semi-rimless (half-rim) profile | Satin black finish | Dimensions & fit: Lens width: 56 mm | Bridge: 18 mm | Temple length: 136 mm | Lens height: 37 mm | Frame width: 130 mm | One size (56-18-136) | Composition & care: Titanium | Clean lenses with a microfiber cloth and lens cleaner; avoid abrasive cleaners and solvents.