For a runner there are few challenges more ambitious than the marathon. Track-and-field’s great race, 42km that separate the athletes from the heroes. Special TAC 1.2mm polarized interchangeable panoramic lens with anti-fog film and REVO cover. DrySky anti-fog system. Extremely flexible and resistant PC frame. Maximum lightness: they only weigh 26g! Includes hard polyurethane case, microfiber bag and replacement pieces for nose pad and temple. Accessories sold separately: photochromic, anti-fog and clear lenses as well as TR90 optical clip.