Giro Jackson MIPS Helmet. The modern profile of the new Jackson helmet uses the new Passive Aggressive Venting system, inspired by the aerodynamic airflow of high-end automobiles. The discreet yet powerful system effectively manages airflow and temperature while riding, hiking or standing. The overall look features a lightweight brim and subtle style for seamless compatibility with Giro eyewear.MIPS technology, an ultra-lightweight construction and the Form 2 Fit system allow for focusing on the terrain ahead.Never miss a line with the ultimate new freeride helmet.