Ray-Ban RB 3427 Sunglasses sport navigator-shaped front with rounded corners. Their full-rimmed metallic frames, which come in dark brown, shiny gunmetal, black, and gunmetal colors, accepts prescription lenses. These mannish glasses bear the brand name at the temples, emphasizing on the authenticity and originality. The soft bendable nose pads exert soft pressure while keeping the eyewear in place. Frames cannot be fit with prescription lenses.