1 aircraft dh helmet biturbo bluethe aircraft is precision engineered with a carbonkevlar composite shell providing an ultra lightweight design enhanced venting channels manage airflow to create one of the most ventilated dh helmets on the market featuresaerospace carbonkevlar composite shellactive cooling system maximises airflow offering more ventilation than any other helmetwashable antibacterial liner cheek pads and chin strap coversemergency release cheek pads for quick safe remova