The most durable foam helmet in the course of black diamond, vision helmet, EPP foam, an EPS foam and an ABS shell that holds Dings and dents in the Dark while remaining incredibly lightweight at just 215 grams. Enhanced side and back covering, add a new level of protection that meets recommended UIAA requirements, strategically placed ventilation ports flow air when temperatures are high. The suspension system and chin strap keep the visual sleek, and the integrated headlight clips are low profile, so they won't get lost on the shoulder and push daylight hours.