The poly-alloy shell construction of the Three.4 helmet provides for a strong lightweight core. The helmet is also fastened with durable, lightweight machined aluminum screws and stainless steel D-rings and rivets that ensure strength and longevity. Equipped with 12 intake and six exhaust vents to form a multi-port air induction cooling system, the Three.4 helmet allows for massive airflow with both the cooling system and the Expanded Polystyrene and comfort liner channels that are intertwined in the helmet’s design. To guarantee more comfort for riders, the helmet also contains a quick-release washable comfort liner and cheek pads along with a removable nose guard, which assists in keeping debris away from the riders’ nose. The retail price is $159.95.