The air is purified by the cabin filters before it enters the cabin. The filters by Wix stop the pollutants found in the air. Whilst protecting against hay fever, eye irritation and ensuring the driver can maintain a high level of concentration this also provides comfort to passengers. For people with pollen allergies, the cabin filter is equipped with the Microban system which is an optimum solution. The Wix� cabin air filters luckily fight and capture airborne contaminants, while also preventing leaves, dirt, bugs and other debris from negatively impacting the operation of the HVAC systems heater, air conditioner and defroster. These cabin filters are now exclusive enhanced with a Microban� antimicrobial technology, which inhibits the growth of microbes by injecting and killing the cells. Together, they not only help keep negative elements from entering the interior of a vehicle, but they also keep cabin air fresh against damaging bacteria, mold and mildew. Their new high-premium XP cabin air filters are built with premium Pur-Air?technology that filters out nearly 100% of allergens like fine dust and pollen. They also absorb odours, gases and pollutants and protects against odour-causing bacteria and mold growth on the filter.