Oakley Tourniquet Sunglasses combine Oakley’s Prizm lens technology with a square full‑rim frame for enhanced contrast and reliable outdoor performance. Key attributes: Multicolor | Trasparente | O-Matter | Prizm lens technology for enhanced contrast | UV protection (UV400) | Impact-resistant lenses | Polarized | Prescription-ready (RX-able) | Full-rim construction | Square full-rim shape | Transparent frame finish | Dimensions & fit: Lens width: 57 mm | Bridge width: 17 mm | Temple length: 140 mm | Composition & care: O-Matter frame | Polycarbonate lenses | Wipe lenses with a microfiber cloth and store in the protective case.