K&amp;N RX-4990DL Blue Air Filter Wrap<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>This product wraps your air filter with an additional pre-filter</li><li>Extends service interval of your K&amp;N filter</li><li>Durable silicone treated polyester material with stitched elastic openings</li><li>Water repellent treatment typically lasts 1 to 2 years</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41yq8pzMO7L.jpg" noproxy>