Whether you need to replace worn lenses or youUre looking to give your Cross-Series frames an upgrade, the ESS Crossbow Replacement Lenses are purpose built to stand up to any challenge ahead. Engineered for maximum protection from projectiles, these ballistic lenses feature ESSOPTICS distortion reduction and ClearZone FlowCoat anti-fog/anti-scratch technology to deliver optimal visual clarity when you need it most. Proudly made in the U.S.A.