Ray-Ban Square Sunglasses pair a squared propionate frame with polarized polycarbonate lenses for everyday sun protection and a modern-retro look. Key attributes: Black | Propionate | Polarized lenses | Polycarbonate lenses | Suitable for strong sunlight (Category 3N) | Includes original case | Square frame | Key bridge | Full-rim design | Dimensions & fit: Lens width: 52 mm | Bridge width: 20 mm | Temple length: 41.4 mm | High bridge fit | One size (52-20) | Composition & care: Propionate | Polycarbonate | Clean lenses with a microfiber cloth. Store in the original case.