Replacement filter bags for use with Sebo Felix and Felix Kombi. Contains 8 Ultra bags. Part number 7029ER. As the first stage of SEBO Felix filtration, these Ultra filterbags act as a filter and as a bag to trap dirt and debris. Offering some of the best filtration by a vacuum bag, the 7029ER bags trap a wide range of particles and are designed to provide maximum capacity without impeding airflow. Replace as needed.