Montblanc Optical Frame MB0438O 003 pairs a classic squared acetate silhouette with the brand’s signature Nib detail, designed for everyday prescription or clear-lens wear. Key attributes: Gray | Acetate | Includes original Montblanc case | Demo lenses fitted | 12-month global warranty | Squared/rectangular shape | Metal Nib icon on endpieces | Full-rim acetate frame | Transparent grey finish | Dimensions & fit: Lens width: 53 mm | Lens height: 42 mm | Bridge width: 17 mm | Temple length: 145 mm | Composition & care: Acetate | Clean lenses with a microfiber cloth and lens cleaner. Store in the supplied case. Avoid exposure to extreme heat and harsh chemicals.