ION Slash Core HelmetThe 360 Fit system allows for a quick, snug, and comfortable fit right out of the box. Whereas standard helmets are only adjustable on their back part, the Slash Core's headband leads from the back to the front right around the entire head. This considers the full circumference and individual shape of the rider's head instead of simply pressing it against the front of the helmet. 360 Fit results in enhanced wearing comfort, less movement while riding