ABS shell, highly resistant to impact, even in extreme temperatures.High density, lightweight EPS (expanded polystyrene) shell with excellent shock absorption properties. Double layer in two densities and molded plasticized PC edge coating. Hundreds of inlaid semi-circles on the surface of the shell not only improve shock absorption, but also allow for excellent air circulation combined with front, rear and center ventilation zones.Inner padding combines moisture-wicking textile and memory foam. Removable and washable.Adjustment system: rear adjustment wheel mounted on a 5-position hoop for precise adjustment of the helmet to your anatomy.Microfiber harness with quick release clip. 4-point rear fastening that fits the neck and is equipped with a chin guard.Weight : between 460 and 560 gr.Helmet CE marked, conforms to EN1384:2012 modified by VG1 RfU CNB/P/01. 040:2014-12. TÜV certification.