- Collection:IMAGINARY LINES - A combination of 100% pure titanium and beta-titanium. As a new addition to our renowned titanium range comes Northern, a classic rectangular medium sized male frame made from 100% pure titanium and beta titanium. Northern is a versatile style for men looking for a classic frame with a simple design with classic and subtle color combinations. Northern's lightness and silicone nose pads make this frame a joy to wear for people who value comfort and classic, Nordic design. This frame comes in 6 color combinations such as Antique Dark Blue and Antique, making Northern a great option for people looking to add subtlety to their look.