First and foremost, a bike helmet should be cool, comfortable and durable. If you can have all of that without excess weight, you’re onto something good for any kind of ride. The Phase™ is a great performance value, with the capability to handle daunting climbs and dirt descents. And with the easy fit and adjustability of Roc Loc® 5 and the comfort of Super Fit™ sizing, no wonder it’s so popular.