ESS ICE Lenses are designed for quick and easy lens replacement. They're treated with a tough hard coat to help prevent scratches and extend the life of your lens. Plus these lenses can survive a shotgun blast from 35 feet! That is protection you can count on. Lens Colors: Clear - General purpose tint for maximum visibility. Smoke Gray - Provides protection from glare and high levels of visible light and ultraviolet radiation without distorting color perception. Hi-Def Yellow - Best for enhancing contrast and light in low light applications (dusk, dawn or foggy environment); not recommended for night driving or bright light environments. Hi-Def Copper - Reduces blue light and enhances contrast. Also helps Red colors stand out. Makes a great driving lens. Key ESS Features: Lenses and frames that provide the highest level of safety and protection from high-impact projectiles Proprietary ClearZone anti-fog and anti-scratch lens coatings for fog-free clarity and durability Exceptional optical quality for distortion-free vision 100% protection against harmful UVA/UVB rays Extra-wide field of view High heat and flame resistance Modular, replaceable parts A broad range of accessories Rx compatibility ESS ICE Eyeshield Replacement Lens Part Numbers: 740-0071 ICE Clear Lenses 740-0011 ICE Smoke Gray Lenses 740-0088 ICE Hi-Def Yellow Lenses 740-0086 ICE Hi-Def Copper Lenses