Product Function: The air filter cover protects the cone air filter, avoids being corroded by dirt, prolongs the service life of the air filter, and ensures the intake of air. Product Material: Made of thick polymer polyester cloth, hydrophobic coating on the surface, more powerful isolation of liquid (in order to retain the air intake effect, not 100% waterproof and oil proof). Production Process: Fine and precise sewing ensures that the product is durable and not easy to tear; it fits the cone air filters more closely, beautifully and practically. Product Features: The filter cover can be cleaned and reused repeatedly, Product Size: Density is 100 mesh, top diameter-120mm/4.72inch, bottom diameter-150mm/5.90inch, height-130mm/5.11inch.