Saint Laurent SL M156 Sunglasses pair a sculpted cat-eye acetate frame with the signature Monogram M YSL hinge, combining a rock‑chic attitude with timeless elegance for everyday wear. Key attributes: Black | Nero | Acetate | Includes case and cleaning cloth | Cat-eye frame | Medium YSL Monogram hinge | Sculpted acetate silhouette | Dimensions & fit: Eye size: 52 mm | Bridge: 20 mm | Temple length: 140 mm | Lens height: 41.6 mm | Lens diagonal (ED): 59.8 mm | Composition & care: Acetate | Nylon | Wipe lenses with a soft, lint-free cloth; store in the supplied case when not in use.