The Spark has the same great technology as its big brothers. The advanced lens technology protects youngsters delicate eyes and the XT Anti-fog double lens ensures the contours of the slopes remain visible.Superior XT Anti-Fog Double lens. Outer lens constructed from Maximum impact resistant polycarbonate (UV400)Tri layer moisture wicking insulated fleece. Cat 3 red mirror Dual Maximum UV lens. Dual adjustment strap. Helmet compatible for junior faces. Bloc goggles exceed European directive 89/686/EEC in accordance with the Norm EN174:2001