Essential accessories- HEPA air filter can more effectively adsorb harmful particles and gases, filter particles above 0.3 microns in 30mins. Apply High Air Filter: blown electrostatic layer+ HEPA Filter layer+ Nutshell activated carbon. main goal: Premium HEPA Cabin prevents harmful fine particles and dust from entering the vehicle cabin while clean and healthy environment to passengers. Suggestion from Car-care experts and cabin filter manufacturers: Replace 8-12 months or 12,000 to 15,000 , especially desert and wet areas. With high density electrostatic electret filter and Design: more filtering power and a service life. We have maximized the filtration area in cabin without affecting the free- of air into the passengers' cabin. Color: black + white Material: fiber cloth Benefits: HEPA=High Efficiency Particulate Air Filter In 30mins, it can filter particles above 0.3 microns without affecting the free- of air into the passengers' cabin. Easy to Install It's easily installed with no , and when replace the , they can be easily removed by using finger to pull out. Compared to competitors, ours are easier to pull out and will not be affected by slipping . The black part is be facing toward the car . The white part is be facing toward the car frunk. Contents:2*Car Air-Filter Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.