These HEPA bags designed for the new Synergy S40 vacuum models, and feature the yellow self-sealing collars. Replace your bag when it's two-thirds full. The bag is very easy to replace.
These bags will not fit X9 just for the new Synergy S40 models feature the yellow self-sealing bag collar. Replace the bag when it's two-thirds full. These bags will not fit Synergy X9 or G9 models. For those machines, see the Synergy X bags (Part # SXH-6).