A natural evolution from the Zone 2 is the EC22-05 Homologated Zone 4 helmet. With its ultralight fibreglass construction, the Zone 4 CARBON is both strong and durable with features such as multiple air intakes, goggle clips, an articulated peak with aluminium hardware, Micro adjustment buckle system and completely removable and washable COOLMAX liner. Making the Zone 4 Carbon, the premiere choice in trials helmets.