Montblanc Optical Frame MB0387O is a square acetate frame designed for everyday prescription use. Its black full‑rim silhouette pairs durable construction with a polished finish for professional and casual settings. Key attributes: Black | Acetate | Full‑rim construction | Compatible with prescription lenses | Includes original case and cleaning cloth | Square shape | Shiny finish | Classic full‑rim silhouette | Dimensions & fit: Lens width: 51 mm | Bridge width: 18 mm | Temple length: 145 mm | Total frame width: 140 mm