HEBO ZONE RACE CARBON K3 TRIALS HELMETCarbon helmet designed especially for the Trial. Completely removable interior, high breathability and optimal ventilation. The Carbon helmet model is specially designed for Trial . With a net weight of 950g, it has a shell made of carbon fiber, and its EPS is made of triple density expanded polystyrene, both available in three different sizes. The interior is entirely removable and is made with foam sheets covered in hypoallergenic Coolmax material.