Checking in at just 11oz, K2's Route Helmet is the lightest snow helmet on the market. It takes its cues from climbing helmets--just check out the ventilation system. The polycarbonate shell and EPS foam liner are fully certified for skiing, snowboarding, and even biking protection. The earpads are removable, as are the fully adjustable headlamp and goggle clips, making for a fully customizable package whether you're in the resort or the backcountry. K2 teamed up with Boa to provide the fully adjustable Boa FS 360 fit system and also included a stretchy waterproof cover that provides the Route with serious weather protection when you wear it during storms.