These are 15 Generic 5055, 50557, and 50558 Allergen Synthetic HEPA Style Vacuum Cleaner Bags for all Canisters made since 1995 including Whispertone, Progressive, and Intuition models. These Allergen Bags are designed to fit Type Q and Type C Bags. Each order contains 3 packages of 5 bags for a total of 15 bags.