FIT: A BOA 360 fit system includes an adjustable dial that delivers a customized, secure fit. LIGHTWEIGHT: The DRT5 Maven weighs 60 grams less than the previous DRT5, making this helmet lighter than ever PROTECTION: Our safety system is a helmet-integrated, low-friction layer designed to decrease rotational motion, helping to reduce the harmful forces that might otherwise impact the wearer's head VENTILATION: DRT5 Maven features 19 vents in total, including newly designed front and top ventilation ports to significantly increase airflow and breathability.