CIN Neutralizer Progressive is specific lens technology that enhances the entire spectral curve of our neutralizing filtration. The lens on top reflects a 20% transmittance while the bottom reflects a transmittance of 68%. The lens gradually changes the transmittance level depending on where the eye is looking through the lens. This is a fantastic lens for green backgrounds and for the shooter looking for an immediately tuning of the sight picture depending on the lighting condition. We call this "Live Visual Management."