Saint Laurent M139 Square Glasses feature a wide squared acetate frame with a subtle monogram hinge, combining refined detailing with everyday wearability. Key attributes: Black | Acetate | Prescription-compatible | Lightweight construction | Compatible with prescription lenses | Supplied with Saint Laurent case and cleaning cloth | Wide squared shape | Thin full-acetate construction | Small monogram hinge on both sides | Full-rim frame | Dimensions & fit: Lens width: 54 mm | Bridge width: 18 mm | Temple length: 145 mm | Lens height: 45 mm | Composition & care: Acetate | Wipe lenses with a microfiber cloth; avoid abrasive cleaners and solvents; store in the protective case when not in use.