Micropore filtration: The cigarette filter has a built-in filter layer with micropores and does not contain any chemical substances. It is detachable and can be used again after cleaning. The cigarette filter has two interchangeable cigarette tips of different sizes, making it suitable for regular or fine cigarettes. . Efficient filter: The physical filtration of micropores effectively traps tar and smoke stains during the passage, but the taste of cigarettes remains unchanged. . Premium Cigarette Filters: This filter can effectively reduce the inhalation of tar and stains, while reducing the stains on your teeth and fingers caused by smoking. The cigarette butts always stay dry. . Reusable: Regular cleaning can extend the life of the cigarette filter. . Customer Service: If you have any questions about our products or customer service, please contact us directly. We will provide you with a replacement or a full refund. Customer satisfaction is our priority. .