Christopher J P.wrote a review of Giro Nine.10 Helmet on January 20, 2012
This helmet is warm, fits well on the head, and as far as I can tell has some pretty good shock absorption. Luckily I haven't tested it extensively on a big jagged boulder, but it has saved me from some seriously headaches. The flaps fold in to let air in on a hot day, fold out to cover up the holes for the cold ones. Best feature is the fit system: the adjuster wheel in the back makes it easy to tighten to your skull.