the pollen filter is not the most exciting or popular feature of a car. However, it is a crucial feature to understand and maintain. Pollen filters clean the air that comes into the cabin of the car and filters out pollen, dust, dirt, exhaust fumes and any other airborne material. This helps to protect you and your passengers from the majority of the pollutants and allergens that your car encounters whilst sitting amongst other cars. It is especially handy during an off-road adventure where dust and pollen can make those with a condition, like asthma or hay fever, feel very uncomfortable.