6642 N.O.W. Titanium Eyeglasses by Lindberg. Color: C01, C02, C04, C06, C06G, C07, C08, C10, C11, C12, C14, C19, C20, C21, Size: 53-20-150. A slim top-bar accents the 6642’s rounded-rectangular lens shape, adding architectural depth. Ultra-lightweight enables all-day use while spring hinges offer adaptability. Comfortable nose styling keeps everything balanced. Understated with a twist, it’s a professional classic redefined.