Oakley Shackle Sunglasses deliver a durable, lightweight option for everyday wear and outdoor activity. The design pairs a square frame with Oakley’s performance lens options to balance style and function. Key attributes: Gray | O Matter | Lightweight frame | Prizm lens options | Impact-resistant polycarbonate lenses | Adjustable wire-core temples | Unobtainium earsocks for secure grip | Prescription-ready | Square frame | Full-rim | Matte finish | Dimensions & fit: Caliber: 52 mm | Bridge: 18 mm | Temple: 137 mm | Lens height: 46 mm | Composition & care: Frame: O Matter | Lenses: Polycarbonate | Earsocks: Unobtainium | Rinse frames with lukewarm water and mild soap; dry lenses with a microfiber cloth. Do not use abrasive cleaners or solvents.