Ray-Ban RX5440 2012 Optical Frame pairs a classic rectangular silhouette with a polished Havana finish for everyday prescription wear. The acetate construction and prescription-ready design make it a reliable choice for daily use. Key attributes: Brown | Havana | Acetate | Prescription-ready | Progressive-compatible | Base 4 lens curvature | Full-rim frame | Demo lenses included | Ray-Ban logo on temples | Rectangular shape | Polished finish | Havana pattern | Dimensions & fit: Available sizes: 53 mm, 55 mm | Lens width: 53 mm, 55 mm | Bridge: 18 mm | Temple length: 145 mm | Lens height: 36 mm, 37 mm | Effective diameter: 57 mm | Regular fit | Composition & care: Acetate | Clean lenses with a microfiber cloth and lens cleaner. Store in the protective case when not in use. Avoid exposure to extreme heat and abrasive cleaners.