Montblanc MB0354S Sunglasses combine a squared, refined silhouette with a lightweight injected acetate frame and durable bio-nylon lenses. Designed for everyday wear and compatible with prescription (graduable) lenses. Key attributes: Gray | Crystal Black Grey | Acetate | Bio nylon lenses | Non-polarized lenses | Lenses can be fitted with prescription (graduable) | Lightweight construction | Squared frame | Full rim | Tubular temples with metal core | Dimensions & fit: Lens width 52 mm | Bridge 18 mm | Temple length 145 mm | Composition & care: Acetate | Bio nylon