The Siroko K3s Bartali bring together the most advanced cutting-edge technology with an extraordinary design. Freedom of movement along with the great comfort they provide make this model an icon within our collection. Special TAC 1.2 mm polarized interchangeable panoramic lens with anti-fog film, REVO cover and improved DrySky anti-fog system. Extremely flexible and resistant PC frame. Maximum lightness: they weigh only 26 g! Includes hard polyurethane case, microfiber bag and spare bands for nose and arms. Available accessories: photochromic, anti-fog and clear lenses as well as TR90 optical clip.