Lens 1 each, Interchangeable: Clear,Amber,Amplifier Flash [9B] Nine Base Curvature. Nine base optically engineered spherical full lens wrap. [IL] Interchangeable Lenses. Three interchangeable lenses: Clear,Amber,Amplifier Flash [IR] Impact Resistant. Polycarbonate sport lenses exceed 21DFR 801.410 high impact regulation standards. [IN] Injected Nylon. Precision injection-molded nylon sport frame. [FV] Frame Ventilation. Sculpted frame includes two air intake frame ventialtion chambers to prevent fogging. [HM] Hydrophilic Megol. Megol nose and ear grips provide solid contact points. [SRP] Solar Radiation Protection. All lenses provide 100% UVA protection. Frame Clear |