The EXO 391 is ECE-2206 and one of the latest full face helmets to come from SCORPION. The first noticeable feature is the rear spoiler which has been aero-tuned to reduce lift & designed to work with the ventilation system to create a vacuum and maximize airflow. This helmets visor is prepared for a MAXVISION Pinlock® which fits perfectly into the specially depressed area of the visor. On the inside of the helmet there is a KWIKWICK2® liner that is machine washable, soft and removable. The EXO 391's shell is made from advanced Polycarbonate Composite & has been wind tunnel tested making the helmet quiet and stable. This Helmet comes with SCORPIONS 5 year warranty.