#grupperm#k&n#raincoat#frenchcap#rain coat for my Mini air filter! Protection against dirt, sand, debris and water. Water repellent and UV resistant mesh is effective in temperatures ranging from below freezing up to 470 degree F. High-tech proprietary polyester fabric that stops debris as small as .005”, but will not reduce airflow or horsepower. It has a tough puncture resistantance yet remains flexible and shatter proof. Substantially extend the life of air filter.