The new Siroko K3 The Cyclist meet the demands of the best cyclists. Special TAC 1.2 mm interchangeable panoramic lens, polarized with anti-fog film and REVO cover. Reinforced DrySky system that avoids fogging up. Ultra-resistant polycarbonate frame. Lightweight, only 27 grams! Includes polyurethane case, microfiber bag and spare rubber bands for nose and arms as a free gift. Photochromic lens, TR90 optical clip, anti-fog lens and clear lens also available as accessories.