Ray-Ban RY1531 Eyeglasses combine a classic geometric silhouette with prescription-ready construction for everyday wear. Key attributes: Black | Acetate | Prescription-compatible | Geometric frame | Dimensions & fit: 48-16-130 (lens width - bridge - temple in mm) | Composition & care: Acetate | Clean lenses and frame with a soft, non-abrasive cloth; avoid exposure to high heat or harsh chemicals.