The Arcore ZEN ski goggles offer superior visibility and protection across diverse lighting conditions. Advanced photochromic lenses automatically change their light transmittance depending on the intensity of the sunlight. This means that the lenses darken in strong sunlight and, conversely, brighten in reduced lighting or in cloudy conditions. The lens has a blue REVO mirror finish. The lens tint adjusts based on current lighting conditions to optimize visibility and glare reduction. The package contains a spare clear glass suitable for night skiing or in very low light conditions, which you can easily change in a few seconds. Three layers of foam ensure all-day comfort, while the anti-fog and anti-scratch technology keeps your lens clean at all times. The view through the lens is slightly yellow, which helps, due to the increase in contrast, that recognizes obstacles. Can be worn with prescription glasses.