HIGH QUALITY - Vorwerk vacuum cleaner bags are made of 5 layers of high-quality microfleece and high-strength plastic cover discs. These Vorwerk vacuum cleaner bags are rigorously tested for compatibility and filtration performance. They are easy to install and durable, and their suction power does not decrease despite the filling of the Kobold vk140 bag. Purifies the air - Five layers of effective filtration prevent fine dust and micro-dust (such as pollen, dust mites, and other allergens) from entering the air; our premium Vorwerk bags are therefore ideal for allergy sufferers. Compared to the 3-layer Vorwerk Kobold bags, Vorwerk vacuum cleaner bags can filter fine dust better. VERY PRACTICAL - The flap closure of the Kobold vacuum cleaner bags ensures that dust and dirt remain securely enclosed in the Vorwerk VK140 bag after use. This prevents microscopic dust from entering and damaging your Vorwerk VK140 VK150 FP140 FP150 vacuum cleaner. The performance and lifespan of the vacuum