Marc Jacobs 691 807 Frame pairs a classic square silhouette with premium acetate construction for everyday optical use. The model focuses on clean lines and subtle logo detailing for a polished look. Key attributes: Black | Acetate | Durable acetate construction | Lightweight comfort | Prescription-ready frame | Includes original case and cleaning cloth | Square full-rim silhouette | Slim temples | Signature logo detail on temples | Dimensions & fit: Lens width: 54 mm | Bridge: 16 mm | Temple length: 140 mm | Medium fit | Composition & care: Acetate | Wipe lenses and frame with a soft cloth; store in the supplied case.