Saint Laurent SL 890 Betty Thin sunglasses refine the Wellington silhouette with a slim, rectangular acetate frame and protective nylon lenses—designed for polished, everyday sun protection. Key attributes: Black | Acetate | UV protection (UV400) | Dark lenses suitable for bright sunlight (8–18% light transmission) | Includes original case | Includes microfiber cleaning cloth | Compatible with prescription and interchangeable lenses | Full-rim frame | Slim rectangular shape | Thin temples | Dimensions & fit: Lens width: 54 mm | Slim rectangular fit | Narrow frame | Composition & care: Acetate (frame) | Nylon (lenses) | Wipe lenses with the included microfiber cloth and store in the supplied case. Avoid abrasive cleaners and harsh chemicals.