Drycharger Air Filter Wrap - Polaris - This specially designed filter wrap is made to extend the service interval of K&N Filterchargers when used in dusty conditions - Contains uniform micron openings like the K&N Precharger, so air can get in but dirt and other contaminants cannot - Silicone treatment deflects water splashed on the air filter - Uses sewn-in elastic opening to securely fasten to air filter - Custom fit to each application