Montblanc Optical Frame MB0452O 004 is a squared acetate frame designed for everyday prescription wear. Its refined rectangular silhouette pairs classic styling with functional prescription compatibility. Key attributes: Gray | Acetate | Compatible with prescription (graduated) lenses | Full-rim construction | Squared shape | Full-rim silhouette | Rectangular profile | Dimensions & fit: Lens width: 55 mm | Bridge width: 17 mm | Temple length: 150 mm | Composition & care: Acetate | Clean lenses with a microfiber cloth and lens cleaner. Store in a protective case when not in use. Avoid exposure to extreme heat and harsh chemicals.