Features Kwikwick2 Liner Advanced Polycarbonate Composite Engineered Shell: Quiet, aero-tuned design for wind-tunnel tested comfort. EPS-lined chin bar for additional protection. Ventilation system: Adjustable, indexed front and rear vents with aero-tuned rear spoiler reduce lift, create vacuum and maximize airflow through helmet. Micrometric Automatic chinstrap buckle for quick release and precise adjustment. Removable chinguard to switch to a Jet style helmet Kwikwick2 Liner Very effective, hypoallergenic, removable, machine washable, and very soft and pleasant to the touch, the KwikWick2 lining of the new ScorpionExo 2011 range is a real custom-made slipper for your head. Article No.: in-11053513-002