The Evo3 safety helmet conforms to EN50365 Class 0 10KV. It features side and rear ventilation for optimum air movement inside the shell. The OneTouch Slip Ratchet can be adjusted using one hand in a single swift movement. The 6-point terylene cradle harness system offers unrivalled comfort. This tough HDPE shell also includes an Egyptian cotton sweatband with a porous PU coating and is compatible and compliant with JSP Sonis Helmet mounted ear defenders.