We're seeing helmets, particularly mountain biking helmets, get a lot longer in the rear over the past few years, and Giro's Feature Helmet is no exception. And, while we're inclined to talk about Barry Melrose's hair now, it can only be considered a good thing to have your everyday helmet cover more of your head as you're cruising through the trees. All that extra protection isn't going to do much good if you can't wait to take it off. To that end, Giro included 12 humongous vents to move air in, through, and out of the helmet so your head stays cool, even on low speed climbs. Additionally, the helmet can be made to fit just right via the In Form one handed fit adjustment system, which uses a dial at the back to get the tension just right.