| Ultra-Thick 2.4mm Polycarbonate: Engineered from 2.4mm high-impact polycarbonate (Model 740-0414), providing one of the thickest ballistic safety barriers available in professional eyewear. Hi-Def Copper Contrast Tech: Features a High-Definition Copper tint designed to filter blue light and enhance depth perception, making it ideal for variable light, flat light, or overcast conditions. Lateral Exchange System Compatibility: Precision-engineered for the CDI MAX™ frame, allowing for rapid, tool-free lens swapping via the integrated side-loading interchange system. | Medium-Large Frame Fit: Specifically designed to accommodate the wider "Medium-Large" architecture of the CDI MAX™ series; note that these lenses are not compatible with standard CDI frames. Technical Replacement Set: Sold as a matched pair of high-performance replacement lenses; please note that the CDI MAX™ sunglass frame is sold separately |