casco challenger exo shimano dura ace HRM-Pro Plus captures running dynamics

HRM-Pro Plus captures running dynamics such as vertical oscillation

the resistance on your rear wheel is automatically adjusted as the slope increases or decreases

rear radar

Thanks to this unique combination of process and material

casco challenger exo shimano dura ace HRM-Pro Plus captures running dynamicsHelmet with 2 shells and 2 EPS for greater safety and perfect fit The shell is made of high quality ABS Multiple air vents for optimal ventilation and cooling Microlock closure Padded comfort liner, removable, sweat absorbent, and washable Bluetooth ready with cavities for internal speakers and rubber ring on the back of the helmet (Bluetooth unit not included) Pinlock ready for optional use Clear visor plus integrated secondary sun visor Compliant