Cover your cranium with a ski and cycling approved helmet. The convertible full-wrap liner allows toque layering, and the 360 fit system tunes in comfort. The Magna-Snap goggle clip uses magnets for easy attachment. And a passive ventilation system moves moisture to stop you from overheating when ripping in sunshine. Molded polycarbonate shell offers lightweight performance. Expanded polystyrene inner. Passive Channel Ventilation System moves air to push moisture and warm air out. K2 Dialed Fit system features 360 dial that locks into a web construction for maximum comfort, eliminating pressure points. Magna-Snap goggle clip has a magnetic strap for easy lens attachment. Convertible full wrap washable liner. Crown mesh wicks moisture and breathes to prevent overheating.