These premium shooting glasses are specially designed to maximize your field of view, enhance colors and offer visual clarity in a wide variety of light conditions. Construction NexPC lenses are up to six times more shatter-resistant than standard polycarbonate lenses. Prescription-quality frames. Adjustable nose bridge provides a custom fit. Cushioned cable temples and three interchangeable lenses. Additional Features Dark Purple: For very bright conditions. Excellent for glare reduction and snow. LT 30.33%. Medium Yellow: For low light or overcast skies. Enhances orange targets on gloomy days. LT 83.69%. Vermillion: For cloudy days and low light, especially good against green backgrounds. LT 41.41%. Protective case included. USA.