Genuine synthetic dust bags for Electrolux canisters I-CUTE Z 209, MONDO Z 5105, 5106, 5115, 5116/B, THE BOSS Z 3105, 3106, 3115, 3116, THE BOSS Z 4105...4116. Our high quality bags have been specifically designed to fit your vacuum cleaner and maintain its best performance. Synthetic dust bags last longer than ordinary paper bags, they have a greater capacity, provide better filtration and are more resistant. Optimised cleaning performance of your vacuum cleaner helps make your home a healthier place. We recommend that bags should be changed regularly and filters should be changed every 4 dust bags. All filters should be replaced at least twice a year or when they become visibly soiled. This pack includes 4x synthetic dust bags and 1x motor filter. Electrolux dust bags reference is ES66.