Montblanc MB0495O Optical Frame combines a refined round silhouette with durable acetate construction for everyday prescription wear and polished, professional looks. Key attributes: Black | Nero | Acetate | Lightweight | Durable frame | Prescription-ready frame | Includes case and cleaning cloth | Round silhouette | Full rim | Dimensions & fit: Lens width: 49 mm | Bridge width: 20 mm | Temple length: 145 mm | | Composition & care: Acetate | Clean with warm water and a soft lint-free cloth. Do not use household cleaners. Store in the supplied case when not in use; avoid contact with cosmetics and perfume.