Aria Helmet Comfortable, lightweight, and highly visible. Reliable protection, sleek design, and solid performance: The Aria climbing helmet features a well-ventilated construction with a robust outer shell made from recycled polycarbonate and an inner shell made from molded EPP foam for high impact protection and energy absorption at a very low weight. The adjustment system with a dial can be operated with one hand and is easy to adjust. To extend the helmet's lifespan, all parts - from the padding to the adjustment system and the headlamp clips - are fully replaceable and readily available. The Aria helmet - a first: For the first time, recycled PC and EPP have been used in the construction of an in-mold climbing helmet that meets the highest safety and protection standards.