Airaid Wraps & Pre-Filters are specially designed to give your filter the extra protection it needs for a longer service life and improved performance. Airaid Pre-Filters are made from the highest grade filtration materials available and may be considered as an extra protective layer for, keeping larger debris away from your sensitive filters. Airaid Pre-Filters will stop dirt and large particles from entering your air filter. They are made from a durable and waterproof polyester material, featuring uniform micro openings to filter out debris 5 microns and larger. You can be sure that the pre-filters will not interfere with airflow. The installation is quick and simple!