Scorpion EXO-900 Solid Helmet Matte Black L/Large Polycarbonate composite shell. KwikWick moisture-wicking breathable helmet liner and cheek pads. Adjustable front and rear vents for maximum airflow. AirFit helmet pump air inflation system for a custom fit. Cheek pad and neck roll adjustment system for improved fit and wind noise reduction. The TransFormerHelmet is "Comm Kit Friendly" on the left side of the helmet is the Comm Door, remove the door to add your kit. IMC MotorComm and J&M Comms both make a system.