K&N's reusable HVAC filters are made from a pleated synthetic filter media, provide excellent filtration and dust holding capacity for long-life performance. They are specially designed to reduce contaminants in the air you breathe - and can be cleaned easily for years of use in your home, office, or business. Instead of repeatedly purchasing new disposable filters, simply wash and reinstall your K&N filter whenever it is dirty. Save money, help the environment, and protect your family with K&N.