Ray-Ban RB4439D Sunglasses blend a squared-front silhouette with a bevelled top bar for a modern geometric look. Designed for everyday sun protection, they deliver solid coverage and a contemporary edge. Key attributes: Brown | Tartaruga | Cellulose propionate | UV protection | Category 3 lenses | Available with polarized lenses | Prescription-ready | Squared front | Bevelled top bar | Flat lenses | Full-rim frame | Dimensions & fit: Lens width: 54 mm | Bridge: 21 mm | Temple length: 145 mm | Vertical lens: 40 mm | Effective lens diameter: 58 mm | Regular fit | Low bridge fit | Composition & care: 100% Cellulose propionate | Clean lenses with a microfiber cloth and lens cleaner. Wipe frame with a soft cloth and store in a protective case.