FRACTYL lens geometry: The proprietary lens shape protects your eyes from drying air currents. Curved nose rests provide even weight distribution and eliminate pressure points. IONIK Lens Tints: Amber lens tint filters out harsh artificial light to reduce eye strain and improve contrast. i-Fi Lens Coatings: Protective lens coatings include anti-reflective properties to reduce glare. Multi-barrel hinges create rotational stability for long lasting fit. DIAMIX lens material: Specifically tuned focusing power improves detail for clearer vision.