Ray-Ban Round Metal Sunglasses combine a slim metal frame with classic round lenses for a timeless, everyday look. The model is designed for clear UV protection and easy prescription conversion. Key attributes: Gunmetal | Metal | UV protection (UV400) | Adjustable nose pads | Compatible with prescription lenses | Round shape | Full-rim metal frame | Thin metal temples | Logo etched on lens | Dimensions & fit: Size 50 — Lens width 50 mm, Bridge 21 mm, Temple 145 mm | Size 53 — Lens width 53 mm, Bridge 21 mm, Temple 145 mm | Composition & care: Metal (frame) | Crystal (lenses) | Clean lenses with a microfiber cloth. Store in protective case when not in use. Avoid abrasive cleaners and high temperatures.