You get twin-layered foam that lets your machine breathe properly while trapping the dirt that kills engines. Produced by Multi Air, a manufacturer with over 30 years of experience building filters that work. Features Twin-layered foam delivers airflow and filtration in one precise package Non-flammable foam on four-stroke models keeps you riding safely Precise fitment seals out dust and debris at every edge Multi Air manufacturing brings three decades of filtration engineering to your ride