Microporous filtration: The cigarette filter features a built-in microporous filter layer that does not contain any chemicals. It is detachable and can be reused after washing. High-efficiency filter: Microporous physical filtration effectively reduces tar and smoke particles during use while maintaining the original taste of the cigarette. Premium cigarette filter: Helps reduce the inhalation of tar and smoke particles, and may help reduce staining on teeth and fingers. Keeps cigarette butts dry during use. Reusable: Can be cleaned regularly to extend its lifespan. Color: Colorful Size: 57 x 8 mm Quantity: 1 piece Note: 1. Due to different measuring methods, a 1-3 cm size deviation may occur. Please consider this before purchasing. 2. Due to variations in monitor displays and lighting, the actual color of the item may differ slightly from the images. 3. Package includes only the items listed above; other products are not included.