MONTBLANC Round Sunglasses combine a slim metal frame with bio-nylon lenses for refined, everyday sunwear. Key attributes: Gold | Brown | Metal | Bio nylon lenses | Includes case and cleaning cloth | Lenses not suitable for prescription (non-graduable) | Round shape | Slim metal frame | Dimensions & fit: Lens width: 52 mm | Bridge: 19 mm | Temple length: 145 mm | Composition & care: Metal (frame) | Bio nylon (lenses) | Clean lenses with mild soapy water and dry with a microfiber or other non-abrasive cloth. Store in the supplied case.