Arm & Hammer Kirby Premium Bag: * Replacement vacuum cleaner bag * Made to fit all Kirby Generation Series Models, including Generation 3, G4, G5, G6, Ultimate G, Ultimate C Diamond Edition and Sentria (units built prior to 2009) and units taking the 197201, 197294, 197301, 197394, 204803 and 205803 bags * Maintain optimal vacuum performance by replacing bag every 30 to 60 days * Store bags in a clean, dry place * Reference owner"s manual for proper replacement instructions