The line of washable replacement cabin air filters by K&N utilizes advanced filtration technology to safeguard the interior, HVAC system and the occupants of the vehicle from pollutants that cause unpleasant odours. These are the last cabin air filter one will ever need to purchase for their vehicle, as they are designed to be washable, reusable and durable. The washable cabin air filters by K&N® are manufactured to exact fitment of factory airbox, providing exceptional protection from odour-causing particles and environmental contaminants. The synthetic material being thermally-bonded high-flowing acts as a physical barrier, helping trap dust, pollen, mould, bacteria, fungi and other pollutants, and is specially pleated to increase the surface area for capturing contaminants. The filters have been engineered to provide hassle-free installation into your factory cabin airbox and are designed to be easily washable and reinstalled as per requirement. With the K&N® 10-Year/Million Mile Limited warranty, you can purchase with confidence.