Montblanc MB0510O Optical Frame pairs a classic rectangular silhouette with a polished acetate construction, designed for everyday prescription wear and refined styling. Key attributes: Black | Nero | Acetate | Demo lenses included | Includes case and accessories | Suitable for prescription lenses | Rectangular frame | Full rim | Gloss finish | Dimensions & fit: Lens width: 54 mm | Lens width: 56 mm | Composition & care: Acetate | Clean lenses with a microfiber cloth and lens cleaner. Wipe frame with a soft cloth; avoid abrasive cleaners and high temperatures.