The 3.5-litres special bag in the MIELE Compact C2 Excellence EcoLine SDRP4 electric vacuum cleaner collects dust and is readily replaceable with a single action, preventing the user from coming into contact with the contents. Because the bag effectively separates dust mites and other allergens from the vacuum cleaner operator during operation, bagged vacuum cleaners are the ideal option for people with allergies and other respiratory conditions.