Reaches a marginal glacier density of 88% (12% VLT) at full darkening. This neutral gray polarized photochromic starts at a 40% tint in moderate temperature low light environments and reaches a comfortable marginal glacier density in cooler brighter conditions. This lens is one of very few that can have an anti-fog coating applied provided no other additional tints or coatings are applied. Polarized lenses are NOT recommended where accurate judgement of surfaces and terrain is critical. Polarizing can cause some LCD displays to black out. Available in NXT only, single vision and progressive. Some RX limitations may apply.