Coarse open-pore foam catches airborne dirt, grime and sand. Exclusively formulated adhesive withstands repeated cleanings, even with harsh solvents or gasoline.
Fused outher and inner elements prevent dirt and grime from being lodged between layers, unlike Twin Air, this can be a problem withinferior two-piece designs. Trapped particles can restrict airflow. And if dirt works it's way into your engine, a pinhead-sized granule will gouge your cylinder, piston and rings like a bullet.