Helmets have long been plagued by an unspoken rule: Light weight, ventilation, aerodynamics—pick two, there's your helmet. As you can tell by now, though, we don't play by these rules—or really any for that matter. We'd rather turn standards on their head
When the mercury drops, reach for the Power Grid™ Sleeveless Baselayer. It'll add some extra warmth for your core, but still be plenty breathable—avoiding the dreadful clamminess that can come with warm base layers.