Sports glasses designed for performance sports, with perfect side ventilation. They are suitable for alpine running, mountain biking, hiking, biathlon or cross-country skiing. They have 3D Fit Nose for a perfect fit on the nose of the nose and a panoramic view. Thanks to rubberized sidewalls they do not fall off the face when sweaty. The photochromic glasses darken or lighten according to the light intensity in the interval of 22 to 28 seconds.