Keep your filter fresh with Rough CountryCOs Cold Air Intake Pre Filter Bags. These handy filter wraps are designed to extend the life of your air filter by stopping dust and debris before they enter your cold air intake.\ Each Pre Filter Bag features a silicone treated polyester material with uniform micron-sized openings that acts as an effective barrier against dust and particles while adding very little restriction to the airflow of the filter. These filter bags also repel water to prevent saturating your air intake from puddles and splashes. The durable, double-stitched elastic openings easily wrap around your intake filter and stay put.\ Rough CountryCOs Pre Filter Bags help extend the life of your cold air intake filter, requiring less service and reducing overall maintenance costs!