Saint Laurent M10_B Optical Frame blends a bold flat-top acetate silhouette with the signature YSL monogram hinge. Designed for prescription lenses, it delivers a structured square profile for everyday wear. Key attributes: Havana | Acetate | Prescription-ready lenses | Full-rim frame | Flat-top silhouette | Square shape | YSL monogram hinge | Bold acetate construction | Dimensions & fit: Lens width: 52 mm | Bridge width: 17 mm | Temple length: 140 mm | Regular fit | Composition & care: Acetate (frame) | Plastic (demo lenses) | Clean lenses with a microfiber cloth and mild lens cleaner; store in the provided protective case; avoid prolonged exposure to heat.