The Giro Nine.10 Snowsports Helmet retains the soul of the original with new inspired style cues, SuperFit Engineering and modern feature upgrades. Built on lab tested anatomical databases and a decade of rider feedback, the new Nine.10 fits more head sizes and shapes than ever before. It's even offered in an X-Large size for those with bigger noggins. The In Form System has a glove-friendly, easy to dial-in custom fit for enhanced stability and comfort. In-mold construction keeps the tough shell and impact-absorbing foam liner from getting heavy or bulky. It also allows the 15 sculpted Super Cool vents to be precisely placed for maximum core temperature regulation. Check out the new Weather Strip Vent Shield which replaces those old, hard to keep track of vent plugs. The Giro Nine.10 helmet is also compatible with all after market TuneUps systems for those that like to jam while they rip.