5 Year Warranty! 2 shell sizes KWIKWICK2® LINER:Very effective, hypoallergenic, removable, machine washable, and very soft and pleasant to the touch, the KwikWick2® lining of the new ScorpionExo® 2017 range is a real custom-made slipper for your head. More Features Advanced Polycarbonate Composite Engineered Shell: Quiet, aero-tuned design for wind-tunnel tested comfort. EPS-lined chin bar for additional wind-protection. Comes with a light smoke and dark smoke sun-visor in the box Ventilation system: Adjustable, indexed front and rear vents with aero-tuned rear spoiler reduce lift, create vacuum and maximize airflow through helmet. 6 available sizes from the XS to the XXL Micrometric Automatic chinstrap buckle for quick release and precise adjustment. Removable chinguard to switch to a JET style helmet Note: this helmet is tested as an Open Face "Jet" style helmet, the chin bar is not protective as acts as wind protection only.