Ray-Ban RB4439D is a retro-inspired rectangular sunglass model from Ray-Ban, designed for everyday sun protection with a modern geometric profile. Its acetate frame and bevelled top bar give a clean, structured look suited to a range of face shapes. Key attributes: Opal Brown | Dark Brown | Acetate | Prescription compatible | Full-rim support | Rectangular shape | Bevelled top bar | Full rim | Metal rivet details | Flat lenses | Dimensions & fit: Lens width: 54 mm | Bridge width: 21 mm | Temple length: 145 mm | Lens height: 40 mm | International geofit | Standard frame size (54-21-145) | Composition & care: Acetate frame | Polycarbonate lenses | Wipe lenses with a microfiber cloth; store in the supplied case when not in use; avoid abrasive cleaners and high heat.