The Nightbird-Series’ titanium dual-frame builds upon years of experimentation with titanium construction in a streamlined aviator shape. Dual-frame construction gently cradles the lens between thin titanium wire, creating a distinct design language for the series. The thin dual-frame is crafted from ultra lightweight titanium that is both flexible and strong. A single screw on either side of the frame uses tension to hold the lenses in place. Inspired by the concept of floating and devices such as microscope slides, the Nightbird-Three breathes life into the classic aviator shape. Unique titanium double frame construction to hold lens. No screws to hold the lens, frame and lens are held with tension design. Custom titanium nosepads. 100% UVA and UVB lens with anti-reflective coating. Made in Japan.