The Zenith X2 Air Hi-Viz helmet features a polypropylene hi-viz HD external shell with excellent impact absorption (down to -30C), resisting yellowing and degradation. D-Core technology with a low-density inner core optimized for top impacts; HD crown protection for stronger side-impact absorption; Click-In padding attachment system; DRY+ moisture-wicking, deodorizing fabric; Adaptive Fit System with double-diameter dial and Self Adaptive Live Hinge; 8 ventilation intakes; advanced eco-leather chinstrap; lateral adjustment divider; ring-to-hook for harness attachment; frontal accessory slot; 4 replaceable lamp clips; easy-click visor adapters; hi-viz nameplate; earplug hooks; 30mm EURO earmuff attachment slots.