JoyNano Car Air Purifier HEPA Vehicle Air Cleaner (Art-C Gray) Captures 99% of allergens with True HEPA filtration including: dust mites, pet dander, plant pollens and more. Powerful PCO technology to remove odor, smoke, pollen, various contaminations. High-performance fan to purify the air in silence and disperse the negative ions thoroughly. Emits negative ions to improve air quality and create a more natural and healthy environment. Simple and modern design, easy to use and maintain.