Our exclusive Visor Performance charts are designed to help you optimize performance based on altitude, and they are a must-have for visor upgrades. Consider that even if your model aircraft didn't come from the factory with a Visor Performance chart, we have them available for you. These are a contemporary take on the classic silk-screened visors. Easy to apply with complete instructions included, they offer a seamless upgrade for your aircraft. Enhance your flying experience by adding a Visor Performance chart.