Casco Challenger Crank kit bulloni sram Bottle cage: Not included

Bottle cage: Not included

Studies conducted by various universities in the United States

It includes a removable back insert that enhances impact protection

computer con antenna ANT+

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Casco Challenger Crank kit bulloni sram Bottle cage: Not includedHelmet with 2 shells and 2 EPS for greater safety and perfect fit The shell is made with 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