[Three layer filtration]: The suction nozzle is made of food grade materials without any additives. It is equipped with a physical four microporous filter and a backflow prevention block on the next wall, which helps capture tar and stains and reduce the intake of harmful substances.[Filtering]: Frequent use of filters can reduce cough and shortnof breath, and relieve sore throat. Effectively reduce cigarette tar and stains inhaled, reduce tooth and finger stains caused by smoking, and keep masks dry.[Compact and convenient]: Light and portable filter nozzle. Each filter can be used for 3-5 ordinary cigarettes. Once the filter is full, just replace it with a new filter. Easy to use, just push and pull.[Improve taste]: Filter to absorb most tar and reduce nicotine. Cigarette filters can reduce tar and smoke stains without taking away the original flavor of cigarettes. Protect the health of you and your family.Package: 200 filter