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Shell Material: lightweight polycarbonate
Impact Foam: EPS impact foam, MIPS low-friction liner
Ventilation: wide ventilation channels at front, top scoop with rear exhaust vents
Fit Adjustment: Boa FS-1 dial with 360-degree fit
Used by professional athletes in competition
Tuned for speed and ready for heart-pounding sprint finishes, ARO5 is an aerodynamic and comfortably lightweight design. Tuned for speed and ready for heart-pounding sprint finishes, ARO5 is an aerodynamic and comfortably lightweight design. TECHNOLOGY BOA® Provides an exact fit with a fully adjustable design. Mips® Technology Remain headstrong with an industry-leading, patented brain protection system that helps protect the head from multidirectional impact.