Akoni Columba Sunglasses update a classic West Coast silhouette with chunky Japanese acetate and high-contrast CR-39 lenses. Designed for all-day wear, they balance bold lines with refined hinge engineering for reliable comfort. Key attributes: Black | Dark grey | Acetate | High-contrast CR-39 lenses | Three-layer anti-reflective coating | Custom titanium hinge plate with threaded tube screw system | Custom titanium temple tips | Chunky 8 mm Japanese acetate temples | Square frame silhouette | Handmade in Japan | Dimensions & fit: Eye 54 mm | Bridge 19 mm | Temple 148 mm | Composition & care: Acetate | Titanium | CR-39 lens