The Maze's AirEvac2 system uses its nine shell vents and EPS channels to increase cool, dry airflow across your scalp. It also helps to prevent goggle fogging. The ear pads snap on and off, and the helmet converts into a beanie for spring and summer: Just remove the ear pads, and pull the liner away from the helmet. The Maze's in-Mold construction makes it super light. Skullcandy Bluetooth and Twin-Tip Phone Link are optional.