Ray-Ban RX5450 Optical Frame features a classic rectangular acetate silhouette designed for everyday prescription wear. Key attributes: Brown | Acetate | Prescription-compatible | Demo lenses included | Rectangle frame | Full-rim | Dimensions & fit: Lens width: 54 mm | Bridge: 19 mm | Lens height: 33.9 mm | Temple length: 145 mm | Composition & care: Acetate | Wipe lenses with a microfiber cloth; avoid abrasive cleaners and harsh chemicals.