Montblanc Optical Frame combines a classic rectangular silhouette with sturdy acetate construction for reliable everyday prescription wear. Key attributes: Havana | Transparent | Acetate | Durable construction | Suitable for daily wear | Compatible with prescription lenses | Includes demo lenses | Rectangular frame | Full-rim construction | Montblanc logo on temples | Dimensions & fit: Lens width: 51 mm | Bridge width: 20 mm | Temple length: 150 mm | International fit | Composition & care: Acetate | Wipe lenses with a microfiber cloth and mild lens cleaner; store in a protective case when not in use.