Durable and lightweight polymer shell. Moisture wicking machine washable cheek pads and comfort liner. 18 intake vents and 6 exhaust vents for added airflow. Eyebrow vent to evaporate sweat. Wire mesh chin bar vent. MSR SC Helmet is a leader in high-value MX and off-road helmets without sacrificing quality or safety. The SC helmet features a plush, removable liner that wicks away moisture and keeps your head cool. The shell design is lightweight and aerodynamic, which helps to reduce rider fatigue and improves riding performance. Whether trailblazing or tearing up the track, ride cool and protected with the MSR SC Helmet.