After 16 months of R&D, we created the MouthPeace and MouthPeace Filters. Made from biodegradable and recycled materials, the triple-layer activated carbon filters sanitize smoke/vapor and enhance flavors by removing resins, contaminants, and tar; all without blocking your intake or reducing airflow. Replace Filter as needed for optimal performance. See and feel the difference. Kit includes 1 MouthPeace & 3 Filters. Colors are assorted