Electrolux S-Clinic vacuum bags. Filters 99% of dust and allergens. High-tech 3-layer filtration traps 99.5% of pollen and bacteria. Beneficial for allergy sufferers and asthma. The S-Bag Clinic deep cleaning bags adapt to Electrolux Harmony， Oxygen and Oxygen 3 vacuum cleaners. Of great benefit to allergy sufferers and asthma， the clinic traps 99.5% of pollen and bacteria through a system of high-tech three-layer filtration.