Relieve your lungs from the horrible effects of smoking with the Vapir Portable Magnetic Filter System. This advanced cigarette filtration device is perfect for reducing the amount of harmful tars, toxins and carcinogens that are associated with smoking. It uses a patented state-of-the-art magnetic filter activated by carbon and UV technology that reduces tar by over 30%. This device works great with store bought filtered and non-filtered cigarettes; as well as hand-rolled cigarettes. Each Vapir Magnetic Cigarette Filtration System comes with 2 Replacement O-Rings and 3 Replacement Mouthpiece Filters.