Montblanc MB0427O Optical Frame pairs a lightweight Hyperlight construction with a geometric square silhouette for comfortable everyday prescription wear. The design balances technical details and refined branding for a polished, wearable look. Key attributes: Grey | Silver | Transparent | Acetate | Lightweight construction | Prescription lens compatible | Injected end tips for comfort | Flat metal temples | Square frame | Geometric silhouette | Montblanc snowcap emblem on temples | Dimensions & fit: Lens width: 50 mm | Lens height: 42 mm | Bridge width: 21 mm | Temple length: 145 mm | Medium size (50) | Composition & care: Acetate | Wipe clean with a soft microfiber cloth.