100% Compatible - These karcher vacuum bags are designed for karcher vacuum cleaners, which are suitable for any filter kit 100% compatible with Karcher Model WD4, WD5, WD6, WD4P, WD5P, WD6P. Karcher MV4, MV5 and MV6, Karcher WD4, WD5, WD5/P Wet & Wet Vacuum Cleaners. Isolate Dust - This karcher vacuum bag can hold not only normal household dust, glass, dust, pollen, gravel, leaves and liquid, but also fungus, mold spores, dust mite droppings and fine allergic dust in the form of bacteria. For allergy sufferers, this means relief from allergenic fine dust in the surrounding air. Quality materials - Unlike the original materials, karcher WD4 vacuum cleaner bags are made of thicker non-woven materials to ensure higher durability. It won't be pierced by the sharp garbage inside and also won't leak. These karcher filter bags can be washed and reused. Cheap and with high quality. Large Capacity - wd4 bag have a large volune to accommodate a lot of trash, which ensures that you don't have