Ray-Ban 3447 Round Metal Sunglasses combine an iconic round metal frame with adjustable nose pads and UV-protective lenses for a timeless, everyday style. Key attributes: Gray | Metal | 100% UVA & UVB protection | Polarized lens option | Adjustable nose pads | Plastic temple tips | Compatible with prescription lenses | Round frame | Curved brow bar | Thin metal temples | Engraved bridge detailing | Dimensions & fit: Lens width: 50 mm | Bridge width: 21 mm | Temple length: 145 mm | Lens height: 47 mm | Composition & care: Metal | Glass | Clean lenses with a microfiber cloth; store in the supplied case when not in use; avoid abrasive cleaners and prolonged exposure to heat.