The modern profile of the Giro Jackson helmet utilizes the new Passive Aggressive Venting system, inspired by the aerodynamic airflow of high-end autos. The discreet yet powerful system effectively manages airflow and temperature while in-motion riding, hiking or standing static. The overall look is finished with a slight brim and subtle lines for Seamless Compatibility with Giro goggles. The Giro Jackson MIPS® technology, an ultra-lightweight construction and the dialed In Form 2 Fit system allows you to confidently focus on the terrain ahead. Leave no line untracked in the new ultimate freeride helmet.
Size XL: 62.5-65 cm circumference