Ray-Ban RB4423D sunglasses feature a square shape with a polished black frame and dark grey lenses, offering a sleek and stylish choice for any occasion. The solid color lenses contribute to their modern appearance, and the durable construction ensures they can keep up with an active lifestyle. These injected sunglasses, in black with grey lenses, are perfect for those who love a decisive style, adding definition and structure to round and oval faces.